Variables Within Quotes

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There are only patterns, patterns on top of patterns, patterns that affect other patterns. Patterns hidden by patterns. Patterns within patterns. If you watch close, history does nothing but repeat itself. What we call chaos is just patterns we haven't recognized. What we call random is just patterns we can't decipher. what we can't understand we call nonsense. What we can't read we call gibberish. There is no free will. There are no variables.
Chuck Palahniuk (Survivor)
In the game of life, we all receive a set of variables and limitations in the field of play. We can either focus on the lack thereof or empower ourselves to create better realities with the pieces we play the game with.
T.F. Hodge (From Within I Rise: Spiritual Triumph over Death and Conscious Encounters With the Divine Presence)
Perception can be one-sided or variant: "Glass half empty or half full." There usually is more than one way of perceiving. Thoroughly check your inner dialogue.
T.F. Hodge (From Within I Rise: Spiritual Triumph over Death and Conscious Encounters With the Divine Presence)
If happiness is dependent on outside variables, it can’t last. Variables always change. Real happiness has to come from within.
Gena Showalter (Firstlife (Everlife, #1))
One of the problems in understanding sensory issues is that sensory sensitivities are very variable, among individuals and within the same individual. A person can be hyper-sensitive in one area (like hearing) and hypo-sensitive in another (like touch). One
Temple Grandin (The Way I See It: A Personal Look at Autism & Asperger's: Revised & Expanded, 4th Edition)
If I remember rightly, you on one occasion defined my limits in a very precise fashion." "Yes," [Watson] answered, laughing. "It was a singular document. Philosophy, astronomy, and politics were marked at zero, I remember. Botany variable, geology profound as regards the mudstains from any region within fifty miles of town, chemistry eccentric, anatomy unsystematic, sensational literature and crime records unique, violin player, boxer, swordsman, lawyer, and self-poisoner by cocaine and tobacco. Those, I think, were the main points of my analysis.
Arthur Conan Doyle (The Adventures of Sherlock Holmes (Sherlock Holmes, #3))
In my lifelong study of the scores of species of ants to be found in the tropical forests of Dal Hon, I am led to the conviction that all forms of life are engaged in a struggle to survive, and that within each species there exists a range of natural but variable proclivities, of physical condition and of behaviour, which in turn weighs for or against in the battle to survive and procreate. Further, it is my suspicion that in the act of procreation, such traits are passed on. By extension, one can see that ill traits reduce the likelihood of both survival and procreation. On the basis of these notions, I wish to propose to my fellow scholars at this noble gathering a law of survival that pertains to all forms of life. But before I do so, I must add one more caveat, drawn from the undeniable behavioural characteristics of, in my instance of speciality, ants. To whit, success of one form of life more often than not initiates devastating population collapse among competitors, and indeed, sometimes outright extinction. And that such annihilation of rivals may in fact be a defining feature of success. Thus, my colleagues, I wish to propose a mode of operation among all forms of life, which I humbly call-in my four-volume treatise-‘The Betrayal of the Fittest’. Obsessional Scrolls Sixth Day Proceedings Address Of Skavat Gill Unta, Malazan Empire, 1097 Burn's Sleep
Steven Erikson (Dust of Dreams (Malazan Book of the Fallen, #9))
The prescience, he realized, was an illumination that incorporated the limits of what it revealed- at once a source of accuracy and meaningful error. A kind of Heisenberg indeterminacy intervened: the expenditure of energy that revealed what he saw, changed what he saw. And what he saw was a time nexus within this cave, a boiling of possibilities focused here, wherein the most minute action - the wink of an eye, a careless word, a misplaced grain of sand - moved a gigantic lever across the known universe. He saw violence with the outcome subject to so many variables that his slightest movement created vast shiftings in the patterns. The vision made him want to freeze into immobility, but this, too was action with its consequences.
Frank Herbert (Dune (Dune, #1))
Formalism, in opting for the functional mode making possible precise quantitative determinations within a closed system of variables, forgoes the possibility of making meaningful statements about human action.
Ludwig Lachmann (Capital, Expectations, and the Market Process: Essays on the Theory of the Market Econony (Studies in Economic Theory))
The critical nature of 'choices' -- [the] timing will prove to be an asset or liability; it will reward wisdom or expose stupidity. Either way, we learn from the path of suffering or satisfaction… by choice or by design.
T.F. Hodge (From Within I Rise: Spiritual Triumph over Death and Conscious Encounters With the Divine Presence)
his slot was given by his lifemate Perry Jarnell, who took six minutes. At that point his audio and video both cut out. After that, even the most pompous speakers quickly figured out that if they hadn’t gotten it said within five minutes, Merril wasn’t going to let them keep trying.
Robert A. Heinlein (Variable Star (Tor Science Fiction))
I’ll be honest with you. The variables that construct my existence are confusing. Like handwritten math equations jammed together on a sloppy page of homework. They don’t make any sense. One math problem leads to another, and then another and so it goes. One day you realize that your life is one whole page of problems and nothing ever gets solved. One ongoing equation with no equal sign at the end. But it occurred to me, beneath the canopy of a starlight heaven, that I’d been looking at my life all wrong. It wasn’t a math equation. Things weren’t supposed to add up. There was no solution. In fact, there was no problem. Life’s variables and numbers and pages of chicken scratch weren’t mathematical marks. They were art. A drawing. An abstract painting. It was meant to be beautiful, not sensical. And embedded within the mess of it all were miracles. Small ones. I’d never paid attention to them because I was too busy, but it didn’t make them less real.
Sean Dietrich (Will the Circle Be Unbroken?: A Memoir of Learning to Believe You’re Gonna Be Okay)
Physical laws do not furnish an explanation of the structures, they represent an explanation within the structures. They express the least integrated structures, those in which the simple relations of function to variable can be established. They are already becoming inadequate in the 'acausal' domain of modern physics.
Maurice Merleau-Ponty (Structure of Behavior)
The problem with racial discrimination, though, is not the inference of a person's race from their genetic characteristics. It is quite the opposite: it is the inference of a person's characteristics from their race. The question is not, can you, given an individual's skin color, hair texture, or language, infer something about their ancestry or origin. That is a question of biological systematics -- of lineage, taxonomy, of racial geography, of biological discrimination. Of course you can -- and genomics as vastly refined that inference. You can scan any individual genome and infer rather deep insights about a person's ancestry, or place of origin. But the vastly more controversial question is the converse: Given a racial identity -- African or Asian, say -- can you infer anything about an individual's characteristics: not just skin or hair color, but more complex features, such as intelligence, habits, personality, and aptitude? /I/ Genes can certainly tell us about race, but can race tell us anything about genes? /i/ To answer this question, we need to measure how genetic variation is distributed across various racial categories. Is there more diversity _within_ races or _between_ races? Does knowing that someone is of African versus European descent, say, allow us to refine our understanding of their genetic traits, or their personal, physical, or intellectual attributes in a meaningful manner? Or is there so much variation within Africans and Europeans that _intraracial_ diversity dominates the comparison, thereby making the category "African" or "European" moot? We now know precise and quantitative answers to these questions. A number of studies have tried to quantify the level of genetic diversity of the human genome. The most recent estimates suggest that the vast proportion of genetic diversity (85 to 90 percent) occurs _within_ so-called races (i.e., within Asians or Africans) and only a minor proportion (7 percent) within racial groups (the geneticist Richard Lewontin had estimated a similar distribution as early as 1972). Some genes certainly vary sharply between racial or ethnic groups -- sickle-cell anemia is an Afro-Caribbean and Indian disease, and Tay-Sachs disease has a much higher frequency in Ashkenazi Jews -- but for the most part, the genetic diversity within any racial group dominates the diversity between racial groups -- not marginally, but by an enormous amount. The degree of interracial variability makes "race" a poor surrogate for nearly any feature: in a genetic sense, an African man from Nigria is so "different" from another man from Namibia that it makes little sense to lump them into the same category.
Siddhartha Mukherjee (The Gene: An Intimate History)
Cultivating a willingness to succeed despite any and all circumstances is the most important variable of the reengagement equation. Your willingness to succeed builds self-esteem. It broadens your concept of your own capability, yet it is the first thing we lose touch with when things go bad. After that, giving up often feels like the sanest option, and maybe it is, but know that quitting chips away at your self-worth and always requires some level of mental rehab. Even if what forces you to quit is an injury or something else beyond your control, you will still have to bounce back from the experience mentally. A successful mission seldom requires any emotional maintenance. In order to execute on your willingness to succeed, you will need to be able to perform without purpose. You’ve heard of purpose, that magical missing ingredient crucial to landing a fulfilling career and building a happy life. What if I told you the importance of finding your purpose was overblown? What if there never was any such thing as your good friend purpose? What if it doesn’t matter what the fuck you do with your time here? What if it’s all arbitrary and life doesn’t give a flying fuck if you want to be happy? What then? All I know is this: I am David Fucking Goggins. I exist; therefore, I complete what I start. I take pride in my effort and in my performance in all phases of life. Just because I am here! If I’m lost, I will find myself. As long as I’m on planet Earth, I will not half-ass it. Anywhere I lack, I will improve because I exist and I am willing.
David Goggins (Never Finished: Unshackle Your Mind and Win the War Within)
But at that particular moment, I sensed also that certain changes in the appearance, the importance, or the size of a person can be explained by the variability of the factors that may interpose between us and the other. One of the most potent in that regard is a belief in our mind: on that evening, within a matter of seconds, my belief that I was going to meet Albertine, then the annihilation of that belief, had made her almost insignificant to me, then infinitely precious; and some years later, the belief that she was faithful to me, followed by disbelief, would have analogous results.
Marcel Proust (In the Shadow of Young Girls in Flower)
Cultures and religions exist, and are explained, to the extent that they reliably express stucturally enduring relationships among mental states and behaviors and where these material relationships enable a given population of individuals to maintain itself in repeated social interaction within a range of ecological contexts. Cultures and religions are not ontologically distinct “superorganisms” or “independent variables” with precise contents or boundaries. They are no more things in and of themselves, or “natural kinds” with their own special laws, than are cloud or sand patterns. Although
Scott Atran (In Gods We Trust: The Evolutionary Landscape of Religion (Evolution and Cognition))
Software tends to be either so powerful that its wealth of features is buried to all but the most intrepid explorers (think Excel) or so specific that it sacrifices features for increased usability, essentially doing few things very well (think mobile apps). In both cases, they force you to operate within a framework of their choosing. This is the main challenge with many productivity systems: They struggle to address the limitless variability and evolutionary nature of our individual needs. Notebooks, in contrast, are beholden to their authors. Their function is limited only by the imagination of their owner.
Ryder Carroll (The Bullet Journal Method: Track the Past, Order the Present, Design the Future)
In a condition of struggle and of failure we must be able to say "I must try harder" or "I must try differently." Both views are essential . . . A change in either makes for a change in outcome. When we say "I must try harder" we mean that the most relevant variable is something within us - intention, will, determination, "meaning it" . . When we say "I must try differently" we mean that the most relevant variable lies in the situation within which intention is being exerted, that we should look to the environment, to the ways it pushes and pulls at us, and in this study find the means to alter that interaction.
Allen Wheelis (How People Change)
Suppose a researcher were to tap you on the shoulder and ask you to write down what, according to cultural lore, males and females are like. Would you stare at the researcher blankly and exclaim ‘But what can you mean? Every person is a unique, multifaceted, sometimes even contradictory individual, and with such an astonishing range of personality traits within each sex, and across contexts, social class, age, experience, educational level, sexuality and ethnicity, it would be pointless and meaningless to attempt to pigeonhole such rich complexity and variability into two crude stereotypes’? No. You’d pick up your pencil and start writing.
Jacky Kilvington, Ali Wood
Now sensitiveness to the state of mind of the public is a difficult thing to achieve or maintain. Any man can tell you with more or less accuracy and clearness his own reactions on any particular issue. But few men have the time or the interest or the training to develop a sense of what other persons think or feel about the same issue. In his own profession the skilled practitioner is sensitive and understanding. lhe lawyer can tell what argument will appeal to court or jury. “The salesman can tell what points to stress to his prospective buyers. The politician can tell what to emphasize to his audience, but the ability to estimate group reactions on a large scale over a wide geographic and psychological area is a specialized ability which must be developed with the same painstaking self-criticism and with the same dependence on experience that are required for the development of the clinical sense in the doctor or the surgeon. The significant revolution of modern times is not industrial or economic or political, but the revolution which is taking place in the art of creating consent among the governed. Within the life of the new generation now in control of affairs, persuasion has become a self-conscious art and a regular organ of popular government. None of us begins to understand the consequences, but it is no daring prophecy to say that the knowledge of how to create consent will alter every political premise. Under the impact of propaganda, not necessarily in the sinister meaning of the world alone, the only constants of our thinking have become variables. It is no longer possible, for example, to believe in the cardinal dogma of democracy that the knowledge needed for the management of human affairs comes up spontaneously from the human heart. Where we act on that theory we expose ourselves to self-deception and to farms of persuasion that we cannot verify. It has been demonstrated that we cannot rely upon intuition, conscience or the accidents of casual opinion if we are to deal with the world beyond our reach.
Walter Lippmann
I would have offered a somewhat different statement, based upon my familiarity with the assessment reports and literature: The earth has warmed during the past century, partly because of natural phenomena and partly in response to growing human influences. These human influences (most importantly the accumulation of CO2 from burning fossil fuels) exert a physically small effect on the complex climate system. Unfortunately, our limited observations and understanding are insufficient to usefully quantify either how the climate will respond to human influences or how it varies naturally. However, even as human influences have increased almost fivefold since 1950 and the globe has warmed modestly, most severe weather phenomena remain within past variability. Projections of future climate and weather events rely on models demonstrably unfit for the purpose.
Steven E. Koonin (Unsettled: What Climate Science Tells Us, What It Doesn’t, and Why It Matters)
III. They seek for themselves private retiring places, as country villages, the sea-shore, mountains; yea thou thyself art wont to long much after such places. But all this thou must know proceeds from simplicity in the highest degree. At what time soever thou wilt, it is in thy power to retire into thyself, and to be at rest, and free from all businesses. A man cannot any whither retire better than to his own soul; he especially who is beforehand provided of such things within, which whensoever he doth withdraw himself to look in, may presently afford unto him perfect ease and tranquillity. By tranquillity I understand a decent orderly disposition and carriage, free from all confusion and tumultuousness. Afford then thyself this retiring continually, and thereby refresh and renew thyself. Let these precepts be brief and fundamental, which as soon as thou dost call them to mind, may suffice thee to purge thy soul throughly, and to send thee away well pleased with those things whatsoever they be, which now again after this short withdrawing of thy soul into herself thou dost return unto. For what is it that thou art offended at? Can it be at the wickedness of men, when thou dost call to mind this conclusion, that all reasonable creatures are made one for another? and that it is part of justice to bear with them? and that it is against their wills that they offend? and how many already, who once likewise prosecuted their enmities, suspected, hated, and fiercely contended, are now long ago stretched out, and reduced unto ashes? It is time for thee to make an end. As for those things which among the common chances of the world happen unto thee as thy particular lot and portion, canst thou be displeased with any of them, when thou dost call that our ordinary dilemma to mind, either a providence, or Democritus his atoms; and with it, whatsoever we brought to prove that the whole world is as it were one city? And as for thy body, what canst thou fear, if thou dost consider that thy mind and understanding, when once it hath recollected itself, and knows its own power, hath in this life and breath (whether it run smoothly and gently, or whether harshly and rudely), no interest at all, but is altogether indifferent: and whatsoever else thou hast heard and assented unto concerning either pain or pleasure? But the care of thine honour and reputation will perchance distract thee? How can that be, if thou dost look back, and consider both how quickly all things that are, are forgotten, and what an immense chaos of eternity was before, and will follow after all things: and the vanity of praise, and the inconstancy and variableness of human judgments and opinions, and the narrowness of the place, wherein it is limited and circumscribed? For the whole earth is but as one point; and of it, this inhabited part of it, is but a very little part; and of this part, how many in number, and what manner of men are they, that will commend thee? What remains then, but that thou often put in practice this kind of retiring of thyself, to this little part of thyself; and above all things, keep thyself from distraction, and intend not anything vehemently, but be free and consider all things, as a man whose proper object is Virtue, as a man whose true nature is to be kind and sociable, as a citizen, as a mortal creature. Among other things, which to consider, and look into thou must use to withdraw thyself, let those two be among the most obvious and at hand. One, that the things or objects themselves reach not unto the soul, but stand without still and quiet, and that it is from the opinion only which is within, that all the tumult and all the trouble doth proceed. The next, that all these things, which now thou seest, shall within a very little while be changed, and be no more: and ever call to mind, how many changes and alterations in the world thou thyself hast already been an eyewitness of in thy time. This world is mere change, and this life, opinion.
Marcus Aurelius (Meditations)
Man has failed to build only from himself autonomously and to find a solid basis in nature for law, and we are left today with Oliver Wendell Holmes’s “experience” and Frederick Moore Vinson’s statement that nothing is more certain in modern society than that there are no absolutes. Law has only a variable content. Much modern law is not even based on precedent; that is, it does not necessarily hold fast to a continuity with the legal decisions of the past. Thus, within a wide range, the Constitution of the United States can be made to say what the courts of the present want it to say—based on a court’s decision as to what the court feels is sociologically helpful at the moment. At times this brings forth happy results, at least temporarily; but once the door is opened, anything can become law and the arbitrary judgments of men are king. Law is now freewheeling, and the courts not only interpret the laws which legislators have made, but make law. Lex Rex has become Rex Lex. Arbitrary judgment concerning current sociological good is king.
Francis A. Schaeffer (How Should We Then Live?: The Rise and Decline of Western Thought and Culture)
The idea of thermal time reverses this observation. That is to say, instead of inquiring how time produces dissipation in heat, it asks how heat produces time. Thanks to Boltzmann, we know that the notion of heat comes from the fact that we interact with averages. The idea of thermal time is that the notion of time, as well, comes from the fact that we interact only with averages of many variables.* As long as we have a complete description of a system, all the variables of the system are on the same footing; none of them act as a time variable. That is to say, none is correlated to irreversible phenomena. But as soon as we describe the system by means of averages of many variables, we have a preferred variable that functions like common time. A time along which heat dissipates. The time of our everyday experience. Hence time is not a fundamental constituent of the world, but it appears because the world is immense, and we are small systems within the world, interacting only with macroscopic variables that average among innumerable small, microscopic variables. We, in our everyday lives, never see a single elementary particle, or a single quantum of space. We see stones, mountains, the faces of our friends—and each of these things we see is formed by myriads of elementary components. We are always correlated with averages. Averages behave like averages: they disperse heat and, intrinsically, generate time.
Carlo Rovelli (Reality Is Not What It Seems: The Journey to Quantum Gravity)
What are the implications of ethnic identity for multi-racial and multi-ethnic societies? Tatu Vanhanen of the University of Tampere, Finland, has probably researched the effects of ethnic diversity more systematically than anyone else. In a massive, book-length study, he measured ethnic diversity and levels of conflict in 148 countries, and found correlations in the 0.5 to 0.9 range for the two variables, depending on how the variables were defined and measured. Homogeneous countries like Japan and Iceland show very low levels of conflict, while highly diverse countries like Lebanon and Sudan are wracked with strife. Prof. Vanhanen found tension in all multi-ethnic societies: “Interest conflicts between ethnic groups are inevitable because ethnic groups are genetic kinship groups and because the struggle for existence concerns the survival of our own genes through our own and our relatives’ descendants.” Prof. Vanhanen also found that economic and political institutions make no difference; wealthy, democratic countries suffer from sectarian strife as much as poor, authoritarian ones: “Ethnic nepotism belongs to human nature and . . . it is independent from the level of socioeconomic development (modernization) and also from the degree of democratization.” Others have argued that democracy is particularly vulnerable to ethnic tensions while authoritarian regimes like Saddam Hussein’s Iraq or Tito’s Yugoslavia can give the impression of holding it in check. One expert writing in Foreign Affairs explained that for democracy to work “the party or group that loses has to trust the new majority and believe that its basic interests will still be protected and that there is nothing to fear from a change in power.” He wrote that this was much less likely when opposing parties represent different races or ethnicities. The United Nations found that from 1989 to 1992 there were 82 conflicts that had resulted in at least 1,000 deaths each. Of these, no fewer than 79, or 96 percent, were ethnic or religious conflicts that took place within the borders of recognized states. Only three were cross-border conflicts. Wars between nations are usually ethnic conflicts as well. Internal ethnic conflict has very serious consequences. As J. Philippe Rushton has argued, “The politics of ethnic identity are increasingly replacing the politics of class as the major threat to the stability of nations.” One must question the wisdom of then-president Bill Clinton’s explanation for the 1999 NATO bombing of Serbia: “[T]he principle we and our allies have been fighting for in the Balkans is the principle of multi-ethnic, tolerant, inclusive democracy. We have been fighting against the idea that statehood must be based entirely on ethnicity.” That same year, the American supreme commander of NATO, Wesley Clark, was even more direct: “There is no place in modern Europe for ethnically pure states. That’s a 19th century idea and we are trying to transition into the 21st century, and we are going to do it with multi-ethnic states.
Jared Taylor (White Identity: Racial Consciousness in the 21st Century)
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Glenn Eichler
The central problem is that models developed by Llinas and others conceive of consciousness as an all-or-nothing condition. They fail to describe how the physical brain can accommodate the ebb and flow of a continuously variable conscious state. I favor an alternative. For more than a decade, scientists have known that the activity of tens of millions of neurons can synchronize for a few hundred milliseconds, then disband in less than a second. These “assemblies” of coordinating cells can vary continuously in just the right space and timescales for the here-and-now experience of consciousness. Wide-ranging networks of neurons assemble, disassemble and reassemble in coalitions that are unique to each moment. My model is that consciousness varies in degree from one moment to the next and that the number of neurons active within an assembly correlates with the degree of consciousness present at any given time.
Scientific American (The Secrets of Consciousness)
test3 defines the sin function as a keyword argument, with its default value being a reference to the sin function within the math module. While we still do need to find a reference to this function within the module, this is only necessary when the test3 function is first defined. After this, the reference to the sin function is stored within the function definition as a local variable in the form of a default keyword argument. As mentioned previously, local variables do not need a dictionary lookup to be found; they are stored in a very slim array that has very fast lookup times. Because of this, finding the function is quite fast! While these effects are an interesting result of the way namespaces in Python are managed, test3 is definitely not “Pythonic.” Luckily, these extra dictionary lookups only start to degrade performance when they are called a lot (i.e., in the innermost block of a very fast loop, such as in the Julia set example). With this in mind, a more readable solution would be to set a local variable with the global reference before the loop is started. We’ll still have to do the global lookup once whenever the function is called, but all the calls to that function in the loop will be made faster. This speaks to the fact that even minute slowdowns in code can be amplified if that code is being run millions of times. Even though a dictionary lookup may only take several hundred nanoseconds, if we are looping millions of times over this lookup it can quickly add up. In fact, looking at Example 4-10 we see a 9.4% speedup simply by making the sin function local to the tight loop that calls it.
Micha Gorelick (High Performance Python: Practical Performant Programming for Humans)
In domestic reindeer the coloration is much more variable within herds—fur of many shades and the occasional pinto, a pattern never seen in wild reindeer.50 Such high variability, as we have seen, is an indicator of relaxed natural selection.
Anonymous
simple to understand because it is coded, (.) – a period. This period appears right between the name of the union variable and the select union member; the one you are trying to access. In defining union type variables, the keyword you need to use is union.   Illustration on using unions within your program:   #include #include union data {
Darrel L. Graham (C Programming: Language: A Step by Step Beginner's Guide to Learn C Programming in 7 Days)
A relevant model here is the random effects ANOVA model.1 Denoting by Yij the outcome value observed for micro-unit i within macro-unit j, this model can be expressed as where μ is the population grand mean, Uj is the specific effect of macro-unit j, and Rij is the residual effect for micro-unit i within this macro-unit. In other words, macro–unit j has the ‘true mean’ μ + Uj, and each measurement of a micro-unit within this macro-unit deviates from this true mean by some value Rij. Units differ randomly from one another, which is reflected in the fact that Uj is a random variable and the name ‘random effects model’. Some units have a high true mean, corresponding to a high value of Uj, others
Tom A.B. Snijders (Multilevel Analysis: An Introduction to Basic and Advanced Multilevel Modeling)
Human minds were a fragile place. The composite elements of ego, emotion, intellect and logical reasoning produced unique conclusions within each person's mind, resulting in variable eventualities.
Jill Thrussell (Metal Detectors)
Stack confinement is a special case of thread confinement in which an object can only be reached through local variables. Just as encapsulation can make it easier to preserve invariants, local variables can make it easier to confine objects to a thread. Local variables are intrinsically confined to the executing thread; they exist on the executing thread's stack, which is not accessible to other threads. Stack confinement (also called within-thread or thread-local usage, but not to be confused with the ThreadLocal library class) is simpler to maintain and less fragile than ad-hoc thread confinement. For
Brian Goetz (Java Concurrency in Practice)
This morning Janik, who had separated from and successfully avoided reconnecting with Nohl the night before, had slept in a room all his own and woke up for the first time in years without someone else to tell him what the plan was or which way to walk, feeling for the first time that it was completely up to him whether to grift or settle in or beg for food and discovered he didn’t feel moved to do either. He finally knew where he was: suspended in the gray limbo of the clinically depressed. He broke wind, simultaneously realizing that he’d been wasting his life circling the drain. Unless he planned to end it all, he had to do whatever it took to feel better, immediately, or else. He’d watched in frustration as people he cared about battled and lost to depression. Depression was sneaky, it shapeshifted, a variable association of thoughtforms that clumped together manifesting in unpleasant distractions stealing people’s precious time. Janik didn’t know how much time he had left in life but he knew he had no time for that.
Maxximillian Dafoe (Mollyville: Humble Beginnings: Dystopian Fantasy for the Expatriate That Lives Within You)
It was a singular document. Philosophy, astronomy, and politics were marked at zero, I remember. Botany variable, geology profound as regards the mud-stains from any region within fifty miles of town, chemistry eccentric, anatomy unsystematic, sensational literature and crime records unique, violin-player, boxer, swordsman, lawyer, and self-poisoner by cocaine and tobacco.
Anonymous
There was a single upright metal plate, wired to the grid of an enormous vacuum tube. Several smaller tubes behind the detector tube made the instrument more sensitive. "It works," explained Gerry, "like an electric variable condenser --" "But I say, it has only one wall. Surely all condensers have two." "Exactly. Only in this case the second wall is formed by any metallic body which comes within a certain range. When I switch on the current, there'll be a perfect electronic balance in the vacuum-tube set-up. It will be upset by the approach of any metal, which naturally changes the capacity. Any such change is registered on the dial here, and rings an alarm bell." "Very ingenious," drawled Michaels. "Especially for Venus, which is poor in metals. Don't worry, Miss Carlyle; we'll find Mr. Strike all right. That's a pretty tough lad to hurt.
Various (Astounding Science Fiction Stories: An Anthology of 350 Scifi Stories (Halcyon Classics Book 1))
The “present” does not exist in an objective sense any more than “here” exists objectively, but the microscopic interactions within the world prompt the emergence of temporal phenomena within a system (for instance, ourselves) that interacts only through the medium of a myriad of variables. Our
Carlo Rovelli (Seven Brief Lessons on Physics)
As mindfulness stabilizes, you will rest more and more as awareness itself. Awareness contains mind-objects, a general term for any mental content, including perceptions, thoughts, desires, memories, emotions, and so on. Although mind-objects may dance busily with each other, awareness itself is never disturbed. Awareness is a kind of screen on which mind-objects register, like—in the Zen saying—the reflections on a pond of geese flying overhead. But awareness is never sullied or rattled by the passing show. In your brain, the neural patterns represented within awareness are highly variable, but the representational capacities themselves—the basis of the subjective experience of awareness—are generally very stable. Consequently, resting as awareness brings a beautiful sense of inner clarity and peace. These feelings are generally deepest in meditation, but you can cultivate a greater sense of abiding as awareness throughout the day. Use routine events—such as the phone ringing, going to the bathroom, or drinking water—as “temple bells” to return you to a sense of centeredness.
Rick Hanson (Buddha's Brain: The Practical Neuroscience of Happiness, Love, and Wisdom)
What is lighting?...It is not presented as an aim of our perception, it is the auxiliary or the mediator of our perception. It is not itself seen, but makes the rest be seen...The lighting directs my gaze and leads me to see the object, so in one sense it knows and sees the object...Reciprocally, our vision does nothing but take up for itself and follow out the encompassing of the spectacle through the pathways traced out for it by the lighting, just as in hearing a phrase we are surprised to find the trace of an external thought. We perceive according to light, just as in verbal communication we think according to others...We can only understand this phenomenon if the spectacle, far from being a sum of objects, or a mosaic of qualities spread out before an acosmic subject, circumvents the subject and offers him a pact. Lighting is not on the side of the object, it is what we take up, what we adopt as a norm, whereas the illuminated thing stands in front of us and confronts us. Lighting is in itself neither color, nor even light, it is prior to the distinction between colors and lights. And this is why it always tends to become 'neutral' for us...We must say that yellow light, by taking on the function of lighting, tends to situate itself as prior to every color, tends toward the absence of color, and that correlatively objects distribute the colors of the spectrum according to the degree and to the mode of their resistance to this new atmosphere. Every color-quale is thus mediated by a color-function and is determined in relation to a level that is variable. The level is established, and along with it all of the color values that depend upon it, when we begin to live within the dominant atmosphere and redistribute upon the objects the colors of the spectrum in function of this fundamental tacit agreement. Our settling into a certain colored milieu, along with the transpositions of all color relations that it entails, is a bodily operation; I can only accomplish this by entering into this new atmosphere because my body is the general power of inhabiting all of the world's milieus, and the key to all of the transpositions and all of the equivalences that keep the world constant.
Maurice Merleau-Ponty (Phenomenology of Perception)
My dream of the chalice decades later demonstrates the future creates the past: that my arrival at the perfect place and time to receive cornucopia and violin was no accident. Thus, your history lives within a memory and therefore any present manifestation will be determined by confirmation or rejection of that memory. Altering just one memory variable can initiate an avalanche; a complete shifting of reality within the sands of consciousness. The secret of mind-to-matter manifestation, then, is that present objects and events are shaped from future thought/emotion forms. Such a powerful archetype, as the chalice, is metaphorical for one’s power to create and to heal. Blessed are those who skillfully transform thought into matter!
Hope Bradford (The Healing Power of Dreams: The Science of Dream Analysis and Journaling for Your Best Life! (A Wealth of Dreams Interpreted))
The crucial differentiation between ME and other forms of postviral fatigue syndrome lies in the striking variability of the symptoms not only in the course of a day but often within the hour. This variability of the intensity of the symptoms is not found in post viral fatigue states.
Melvin Ramsay
Here’s the problem: The future isn’t made up of predetermined, structured data alone. It changes as a result of people, and what we are learning, breaking, achieving, feeling, saying, thinking, and building in the present. Algorithms can’t account for the introduction of new qualitative variables, such as hardheaded CEOs, temperamental developers, or the eruption of mob justice within online communities.
Amy Webb (The Signals Are Talking: Why Today's Fringe Is Tomorrow's Mainstream)
sobs” (sanglots). Some days I enter poetic melancholic states, what the Portuguese call saudade or the Turks hüzün (from the Arabic word for sadness). Other days I am more aggressive, have more energy—and will write less, walk more, do other things, argue with researchers, answer emails, draw graphs on blackboards. Should I be turned into a vegetable or a happy imbecile? Had Prozac been available last century, Baudelaire’s “spleen,” Edgar Allan Poe’s moods, the poetry of Sylvia Plath, the lamentations of so many other poets, everything with a soul would have been silenced. … If large pharmaceutical companies were able to eliminate the seasons, they would probably do so—for a profit, of course. There is another danger: in addition to harming children, we are harming society and our future. Measures that aim at reducing variability and swings in the lives of children are also reducing variability and differences within our said to be Great Culturally Globalized Society.
Nassim Nicholas Taleb (Antifragile: Things that Gain from Disorder)
My systolic blood pressure had dropped from 142 ten days ago—a deep state of stage 2 hypertension—to 124, still a bit high but just a few points from a healthy range. My heart rate variability increased by more than 150 percent, and my carbon dioxide levels rose around 30 percent, taking me from a state of hypocapnia, which can cause dizziness, numbness in the fingers, and mental confusion, and placing me squarely within the medically normal
James Nestor (Breath: The New Science of a Lost Art)
Building societies that thrive in the age of AI will require substantial changes to our economy but also a shift in culture and values. Centuries of living within the industrial economy have conditioned many of us to believe that our primary role in society (and even our identity) is found in productive, wage-earning work. Take that away and you have broken one of the strongest bonds between a person and his or her community. As we transition from the industrial age to the AI age, we will need to move away from a mindset that equates work with life or treats humans as variables in a grand productivity optimization algorithm. Instead, we must move toward a new culture that values human love, service, and compassion more than ever before.
Kai-Fu Lee (AI Superpowers: China, Silicon Valley, and the New World Order)
Studies affirm that people generally prefer lighting that is variable, rather than uniform. These hills and valleys of light attract our eyes to points of interest within a space, but even more important, they draw us together. As Alexander emphasizes in A Pattern Language, because people are unconsciously attracted to light, the brightest spots will be the ones where people congregate, making these the most lively and joyful hubs of activity in a space.
Ingrid Fetell Lee (Joyful: The Surprising Power of Ordinary Things to Create Extraordinary Happiness)
Cadence is the use of a regular, predictable rhythm within a process. This rhythm transforms unpredictable events into predictable events. It plays an important role in preventing variability from accumulating in a sequential process.
Donald G. Reinertsen (The Principles of Product Development Flow: Second Generation Lean Product Development)
We want products in stock and immediately available to customers, and we want minimal total inventory in order to keep associated holding costs, and thus prices, low. To achieve both, there is a right amount of inventory. We use historical purchase data to forecast customer demand for a product and expected variability in that demand. We use data on the historical performance of vendors to estimate replenishment times. We can determine where to stock the product within our fulfillment network based on inbound and outbound transportation costs, storage costs, and anticipated customer locations.
Jeff Bezos (Invent and Wander: The Collected Writings of Jeff Bezos)
the forms of the landscape – like the identities and capacities of its human inhabitants – are not imposed upon a material substrate but rather emerge as condensations or crystallizations of activity within a relational field. As people, in the course of their everyday lives, make their way by foot around a familiar terrain, so its paths, textures and contours, variable through the seasons, are incorporated into their own embodied capacities of movement, awareness and response – or into what Gaston Bachelard calls their ‘muscular consciousness’. But conversely, these pedestrian movements thread a tangled network of personalized trails through the landscape itself. Through walking, in short, landscapes are woven into life, and lives are woven into the landscape, in a process that is continuous and never-ending.
Tim Ingold
Resilience is a measure of a system’s ability to survive and persist within a variable environment. The opposite of resilience is brittleness or rigidity.
Donella H. Meadows (Thinking in Systems: A Primer)
when you assign a value to a variable name that hasn’t been previously declared, it is treated as a new, global variable. So be careful, if you do this within a function you are creating a global variable. Note
Eric Freeman (Head First HTML5 Programming: Building Web Apps with JavaScript)
Soon I began to realize that cultural camouflage also obscured the universality of emotional process in institutions. For example, frequently, the leaders of a church would come to me seeking techniques for dealing with a member of the staff or a member of the congregation who was acting obstreperously, who was ornery, and who intimidated everyone with his gruffness. I might say to them, “This is not a matter of technique; it’s a matter of taking a stand, telling this person he has to shape up or he cannot continue to remain a member of the community.” And the church leaders would respond, “But that’s not the Christian thing to do.” (Synagogue leaders also tolerate abusers for the same reason.) Overall, this long-range perspective brought me to the point of wondering if there were not some unwitting conspiracy within society itself to avoid recognizing the emotional variables that, for all their lack of concreteness, are far more influential in their effects on institutions than the more obvious data that society loves to measure. Perhaps data collection serves as a way of avoiding the emotional variables. After all, the denial of emotional process is evident in society at large. If, for example, we succeed in reducing the number of cigarettes smoked by our nation’s youth but do nothing to reduce the level of chronic anxiety throughout the nation, then the addiction will just take another form, and the same children who were vulnerable to one kind of addiction will become easy prey for the as-yet unimagined new temptation. It
Edwin H. Friedman (A Failure of Nerve: Leadership in the Age of the Quick Fix)
The tomato crop growth variables were measured manually in eight plants randomly located in the greenhouse [339]. The following measurements were taken at a frequency of 8 days: Number of nodes, number of nodes of the first bunch, flower birth, curdle of fruits, number of nodes within the first fruit, number of nodes with the curdle of the first fruit, and its growth dynamics. On the other hand, six different plants were selected every 23 days to measure the leaf area, dry weight, and biomass of the different plant elements (roots, stems, leaves, flowers, and fruits), where destructive methods were used to estimate their values.
Francisco Rodríguez (Modeling and Control of Greenhouse Crop Growth (Advances in Industrial Control))
The same law that was engraved upon the tables of stone is written by the Holy Spirit upon the tables of the heart. Instead of going about to establish our own righteousness we accept the righteousness of Christ. His blood atones for our sins. His obedience is accepted for us. Then the heart renewed by the Holy Spirit will bring forth “the fruits of the Spirit.” Through the grace of Christ we shall live in obedience to the law of God written upon our hearts. Having the Spirit of Christ, we shall walk even as he walked. Through the prophet he declared of himself, “I delight to do Thy will, O My God: yea, Thy law is within My heart.” Psalm 40:8. And when among men he said, “The Father hath not left Me alone; for I do always those things that please him.” John 8:29. [373] The apostle Paul clearly presents the relation between faith and the law under the new covenant. He says: “Being justified by faith, we have peace with God through our Lord Jesus Christ.” “Do we then make void the law through faith? God forbid: yea, we establish the law.” “For what the law could not do, in that it was weak through the flesh”—it could not justify man, because in his sinful nature he could not keep the law—“God sending his own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh: that the righteousness of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit.” Romans 5:1; 3:31; 8:3, 4. God’s work is the same in all time, although there are different degrees of development and different manifestations of his power, to meet the wants of men in the different ages. Beginning with the first gospel promise, and coming down through the patriarchal and Jewish ages, and even to the present time, there has been a gradual unfolding of the purposes of God in the plan of redemption. The Saviour typified in the rites and ceremonies of the Jewish law is the very same that is revealed in the gospel. The clouds that enveloped his divine form have rolled back; the mists and shades have disappeared; and Jesus, the world’s Redeemer, stands revealed. He who proclaimed the law from Sinai, and delivered to Moses the precepts of the ritual law, is the same that spoke the Sermon on the Mount. The great principles of love to God, which he set forth as the foundation of the law and the prophets, are only a reiteration of what he had spoken through Moses to the hebrew people: “hear, O Israel: The Lord our God is one Lord: and thou shalt love the Lord thy God with all thine heart, and with all thy soul, and with all thy might.” Deuteronomy 6:4, 5. “Thou shalt love thy neighbor as thyself.” Leviticus 19:18. The teacher is the same in both dispensations. God’s claims are the same. The principles of his government are the same. For all proceed from him “with whom is no variableness, neither shadow of turning.” James 1:17. [374] Chapter
Ellen Gould White (Patriarchs and Prophets (Conflict of the Ages Book 1))
The first form, a short variable declaration, is the most compact, but it may be used only within a function, not for package-level variables.
Alan A.A. Donovan (The Go Programming Language)
Systems reside in a nested structure; that is, each component in a system is a system in itself. And every system we are modeling resides within other systems. This nesting leads to the critical concept of endogenous versus exogenous variables.
Rich Jolly (Systems Thinking for Business: Capitalize on Structures Hidden in Plain Sight)
Climate change has happened, is happening and will always happen. Contrary to the message of the last thirty years, current rate of climate change is well within the bounds of natural variability.
Tim Ball (The Deliberate Corruption of Climate Science)
A pandemic is a complex adaptive system comprising many different components or pieces of information (as diverse as biology or psychology), whose behaviour is influenced by such variables as the role of companies, economic policies, government intervention, healthcare politics or national governance. For this reason, it can and should be viewed as a “living network” that adapts to changing conditions – not something set in stone, but a system of interactions that is both complex and adaptive. It is complex because it represents a “cat’s cradle” of interdependence and interconnections from which it stems, and adaptive in the sense that its “behaviour” is driven by interactions between nodes (the organizations, the people – us!) that can become confused and “unruly” in times of stress (Will we adjust to the norms of confinement? Will a majority of us – or not – abide by the rules? etc.). The management (the containment, in this particular case) of a complex adaptive system requires continuous real-time but ever-changing collaboration between a vast array of disciplines, and between different fields within these disciplines.
Klaus Schwab (COVID-19: The Great Reset)
Problems don’t inherently make you a stronger person unless you change and adapt. The variable here is you. The common denominator is whether or not you shift your foundational perspective on the world and how you behave within it.
Brianna Wiest (The Mountain Is You: Transforming Self-Sabotage Into Self-Mastery)
You may be wondering why Mother Nature would program this variability across people. As a social species, should we not all be synchronized and therefore awake at the same time to promote maximal human interactions? Perhaps not. As we’ll discover later in this book, humans likely evolved to co-sleep as families or even whole tribes, not alone or as couples. Appreciating this evolutionary context, the benefits of such genetically programmed variation in sleep/wake timing preferences can be understood. The night owls in the group would not be going to sleep until one or two a.m., and not waking until nine or ten a.m. The morning larks, on the other hand, would have retired for the night at nine p.m. and woken at five a.m. Consequently, the group as a whole is only collectively vulnerable (i.e., every person asleep) for just four rather than eight hours, despite everyone still getting the chance for eight hours of sleep. That’s potentially a 50 percent increase in survival fitness. Mother Nature would never pass on a biological trait—here, the useful variability in when individuals within a collective tribe go to sleep and wake up—that could enhance the survival safety and thus fitness of a species by this amount. And so she hasn’t.
Matthew Walker (Why We Sleep: Unlocking the Power of Sleep and Dreams)
Since no two captives’ experiences are identical, Oatman’s allegiance to the Mohaves cannot be fully theorized through comparison. Variables beyond age, gender, and length of captivity played into a captive’s desire and potential for assimilation. Other factors included the tribe’s motivations for taking prisoners, its treatment of captives, the individual whims of the abductors, whether captives had remaining family members, either within or outside the tribe, and whether they married and had children during captivity.
Margot Mifflin (The Blue Tattoo: The Life of Olive Oatman (Women in the West))
A good thing to do is to think about what people have done. Not only people that you've read about in books or seen on the news or heard mentioned in deliberate conversation, and not only deeds that are noteworthy. It's good to think about all the possibilities of what people have probably done. The scope of what's possible, statistical probabilities of unique behavior and unusual action in the 200,000 years that people have existed because there are more than 7 billion of us alive right now and that's not including the number of people who have ever lived. Within those numbers exist captivating, eccentric, strange, fanciful variation, when you consider what people have probably done. Like, every time you've had an impulse that you've held back, imagine that there has been a person who has had that same impulse and gone through with it, because there probably has been. Imagine any type of person and any type of story having happened because when you do that, it feels like you're creating, but you're probably not. Imagine, considering the magnitude of these numbers and the variables within each human being, that all possibilities have occurred. If physical anomalies like twins born with bodies totally fused together resembling two-headed, eight limbed, human spiders, or a man born with a shrunken female head affixed to the back of his own head, which was animated without being consciously controlled by him, then imagine that anything you can imagine has occurred. However typical or atypical, these things you're imagining have happened. These people you're thinking of have been.
Ani Baker (Handsome Vanilla)
lesson is clear: once we enter a specific range of strenuous exercise, the body kicks in to lose fat no matter what our genes want. Bouchard’s groundbreaking work tracing genetic aspects of fat in the 1980s and 1990s depended on observations of physical traits within families; statistical modeling to account for variables such as gender, age, energy intake and expenditure; and human experimentation confined to pairs of identical twins. But new technological advances are now allowing for more specific investigation of
Sylvia Tara (The Secret Life of Fat: The Groundbreaking Science On Why Weight Loss Is So Difficult)
The dominant model of disease in our time is biomedical, built on a foundation of molecular biology. As Engel explains, It assumes disease to be fully accounted for by deviations from the norm of measurable biological (somatic) variables. It leaves no room within its framework for the social, psychological, and behavioral dimensions of illness. The biomedical model not only requires that disease be dealt with as an entity independent of social behavior, it also demands that behavioral aberrations be explained on the basis of disordered somatic (biochemical or neurophysiological) processes. Thus the biomedical model embraces both reductionism, the philosophic view that complex phenomena are ultimately derived from a single primary principle, and mind-body dualism.
Andrew Weil (Spontaneous Happiness)
Economics and P&L What are the per-unit economics of the device? That is, what is the expected gross profit and contribution profit per unit? What is the rationale for the price point you have chosen for the product? How much will we have to invest up front to build this product in terms of people, technology, inventory, warehouse space, and so on? For this section of the PR/FAQ, ideally one or more members of your finance team will work with you to understand and capture these costs so you can include a simplified table of the per-unit economics and a mini P&L in the document. A resourceful entrepreneur or product manager can do this work themselves if they do not have a finance manager or team. For new products, the up-front investment is a major consideration. In the case of Melinda, there is a requirement for 77 people to work on the hardware and software, for an annualized cost of roughly $15 million. This means that the product idea needs to have the potential to earn well in excess of $15 million per year in gross profit to be worth building. The consumer questions and economic analysis both have an effect on the product price point, and that price point, in turn, has an effect on the size of the total addressable market. Price is a key variable in the authoring of your PR/FAQ. There may be special assumptions or considerations that have informed your calculation of the price point—perhaps making it relatively low or unexpectedly high—that need to be called out and explained. Some of the best new product proposals set a not-to-exceed price point because it forces the team to innovate within that constraint and face the tough trade-offs early on. The problem(s) associated with achieving that price point should be fully explained and explored in the FAQ.
Colin Bryar (Working Backwards: Insights, Stories, and Secrets from Inside Amazon)
Look at stocks as part ownership of a business. 2. Look at Mr. Market—volatile stock price fluctuations—as your friend rather than your enemy. View risk as the possibility of permanent loss of purchasing power, and uncertainty as the unpredictability regarding the degree of variability in the possible range of outcomes. 3. Remember the three most important words in investing: “margin of safety.” 4. Evaluate any news item or event only in terms of its impact on (a) future interest rates and (b) the intrinsic value of the business, which is the discounted value of the cash that can be taken out during its remaining life, adjusted for the uncertainty around receiving those cash flows. 5. Think in terms of opportunity costs when evaluating new ideas and keep a very high hurdle rate for incoming investments. Be unreasonable. When you look at a business and get a strong desire from within saying, “I wish I owned this business,” that is the kind of business in which you should be investing. A great investment idea doesn’t need hours to analyze. More often than not, it is love at first sight. 6. Think probabilistically rather than deterministically, because the future is never certain and it is really a set of branching probability streams. At the same time, avoid the risk of ruin, when making decisions, by focusing on consequences rather than just on raw probabilities in isolation. Some risks are just not worth taking, whatever the potential upside may be. 7. Never underestimate the power of incentives in any given situation. 8. When making decisions, involve both the left side of your brain (logic, analysis, and math) and the right side (intuition, creativity, and emotions). 9. Engage in visual thinking, which helps us to better understand complex information, organize our thoughts, and improve our ability to think and communicate. 10. Invert, always invert. You can avoid a lot of pain by visualizing your life after you have lost a lot of money trading or speculating using derivatives or leverage. If the visuals unnerve you, don’t do anything that could get you remotely close to reaching such a situation. 11. Vicariously learn from others throughout life. Embrace everlasting humility to succeed in this endeavor. 12. Embrace the power of long-term compounding. All the great things in life come from compound interest.
Gautam Baid (The Joys of Compounding: The Passionate Pursuit of Lifelong Learning, Revised and Updated (Heilbrunn Center for Graham & Dodd Investing Series))
To apply first principles thinking to the field of value investing, consider several fundamental truths. Understand and practice the following if you want to become a good investor: 1. Look at stocks as part ownership of a business. 2. Look at Mr. Market—volatile stock price fluctuations—as your friend rather than your enemy. View risk as the possibility of permanent loss of purchasing power, and uncertainty as the unpredictability regarding the degree of variability in the possible range of outcomes. 3. Remember the three most important words in investing: “margin of safety.” 4. Evaluate any news item or event only in terms of its impact on (a) future interest rates and (b) the intrinsic value of the business, which is the discounted value of the cash that can be taken out during its remaining life, adjusted for the uncertainty around receiving those cash flows. 5. Think in terms of opportunity costs when evaluating new ideas and keep a very high hurdle rate for incoming investments. Be unreasonable. When you look at a business and get a strong desire from within saying, “I wish I owned this business,” that is the kind of business in which you should be investing. A great investment idea doesn’t need hours to analyze. More often than not, it is love at first sight. 6. Think probabilistically rather than deterministically, because the future is never certain and it is really a set of branching probability streams. At the same time, avoid the risk of ruin, when making decisions, by focusing on consequences rather than just on raw probabilities in isolation. Some risks are just not worth taking, whatever the potential upside may be. 7. Never underestimate the power of incentives in any given situation. 8. When making decisions, involve both the left side of your brain (logic, analysis, and math) and the right side (intuition, creativity, and emotions). 9. Engage in visual thinking, which helps us to better understand complex information, organize our thoughts, and improve our ability to think and communicate. 10. Invert, always invert. You can avoid a lot of pain by visualizing your life after you have lost a lot of money trading or speculating using derivatives or leverage. If the visuals unnerve you, don’t do anything that could get you remotely close to reaching such a situation. 11. Vicariously learn from others throughout life. Embrace everlasting humility to succeed in this endeavor. 12. Embrace the power of long-term compounding. All the great things in life come from compound interest.
Gautam Baid (The Joys of Compounding: The Passionate Pursuit of Lifelong Learning, Revised and Updated (Heilbrunn Center for Graham & Dodd Investing Series))
We observe the universe from within it, interacting with a minuscule portion of the innumerable variables of the cosmos. What we see is a blurred image. This blurring suggests that the dynamic of the universe with which we interact is governed by entropy, which measures the amount of blurring. It measures something that relates to us more than to the cosmos.
Carlo Rovelli (The Order of Time)
Cultivating a willingness to succeed despite any and all circumstances is the most important variable of the reengagement equation. Your willingness to succeed builds self-esteem. It broadens your concept of your own capability, yet it is the first thing we lose touch with when things go bad. After that, giving up often feels like the sanest option, and maybe it is, but know that quitting chips away at your self-worth and always requires some level of mental rehab.
David Goggins (Never Finished: Unshackle Your Mind and Win the War Within)
Over the years, my brain trust of more than twenty-five people has included a guy who was number one in his class at Caltech, a department chair of economics at a major U.S. university, mathematical savants, computer wizards, PhDs, and quantitative and database handicappers who live and breathe algorithms and theoretical angles not found in your average textbook. Our team members act like hedge fund analysts, assigning a numerical value to every conceivable factor or variable capable of affecting sporting events to within a tenth of a point. In the NFL alone, I have several teams of experts working independently. They have never met each other, even though most have worked with me for more than thirty years, funneling their information to one common denominator: me.
Billy Walters (Gambler: Secrets from a Life at Risk)
ontologizes into a universal frame the differential structure caught in a self-referential movement circulating around its constitutive impossibility, and the real appears within this frame as the “impossible” of this structure and, as such, as an ahistorical limit—as the elusive excess that defines the structure itself. However, this ontologization of the logic of the signifier is based on ignoring the fact that it is rooted in the artificially produced analytic situation, produced by the “enclosure of the clinical space” (analyst-analysand): the real is the “impossible” excluded from and by this situation, and as such a historical variable which can be analyzed as part of another wider reality.
Slavoj Žižek (Surplus-Enjoyment: A Guide For The Non-Perplexed)
The first thing we did was to run a factor analysis on the data. Put simply, factor analysis is a statistical methodology for grouping a large number of variables into a smaller set of categories within which variables co-present and move together.
Matthew Dixon (The Challenger Sale: Taking Control of the Customer Conversation)
The perpetrator of such a misdemeanor must have a motive. Is UMMO the private joke of a group of Spanish engineers? Is it a psychological warfare exercise, as some French analysts suspect? Or is the truth more complex, rooted in a social reality where the ideas and symbols of UMMO have acquired a life of their own, their special mythology, and a set of beliefs that feed on themselves? We can at least be certain of one thing: the UMMO documents do not come from advanced beings trying to demonstrate their existence to us. But try to explain it to their disciples! Very few UFO believers, and even fewer of their New Age counterparts, have any formal training in science. They are easily awed by any document that contains a few equations and a numerical system of base 12. Yet if they had some awareness of modern technology, they would realize how easy it should be for an advanced race to prove its genuine skill to a society like the human race. After reading the masses of documents purportedly coming from the planet UMMO, I asked myself: if I had the opportunity to communicate with intelligent beings of an earlier time, such as the high priests of Egypt, how would I establish a meaningful dialogue? I certainly would not insult them by sending a letter beginning with ”We are aware of the transcendence of what we are about to tell you”—especially if I had an imperfect command of hieroglyphics! Instead, I would concentrate on a few points of valuable, verifiable information. Since the Egyptians already knew how to make electrical batteries and were aware of the magnetic properties of certain minerals, I would send them a simple set of instructions to make a coil and a compass. I could explain resistance and Ohm’s Law, a simple equation that was easily within the grasp of their mathematicians. Or I would tell them about making glass and lenses from sand. If they wanted proof, I would not bother to reveal to them set theory or the fact that E is equal to mc2. Instead, I would send them a table predicting future eclipses, or a diagram to build an alternator, or Leonardo da Vinci’s design for variable-speed cogwheels. That should get the attention of the top scientists in their culture and open up a dialogue. Unfortunately, the extraterrestrials of UMMO and other planets never seem to communicate at this level. Are they afraid of collapsing our society by appearing too advanced with respect to us? This hypothesis does not hold, since they have chosen a very obvious way of showing themselves in our skies.
Jacques F. Vallée (Revelations)
Will prayer be the cost-effective solution to America’s health care challenges? Probably not. The researchers did not find any difference in the rate of complications within thirty days of surgery for those who were offered prayers compared with those who were not. Critics of the study pointed out a potential omitted variable: prayers coming from other sources. As the New York Times summarized, “Experts said the study could not overcome perhaps the largest obstacle to prayer study: the unknown amount of prayer each person received from friends, families, and congregations around the world who pray daily for the sick and dying.
Charles Wheelan (Naked Statistics: Stripping the Dread from the Data)
When scientists work within a paradigm, they are working within a limited view of the world that accommodates most of the observations done till that stage. A paradigm is an incomplete model – a simplified and approximated version of reality, or a projection onto a plane that has a few variables approximated away." (The Fuzzy Truth of Science [The Follies: Dark Outcomes]. Fuzzy on the Dark Side)
Ahmad Hijazi (Fuzzy on the Dark Side: Approximate Thinking, and How the Mists of Creativity and Progress Can Become a Prison of Illusion)
By and large, you are born into an extravaganza of fixed variables that you do not control. You must accept this. At the same time, you also must believe you are the master of your own future. You can take responsibility for the outcomes in your life. You can achieve virtually anything you set your mind to, as long as what you set your mind to is within the realms of possibility for you, based on your strengths and assets (your unfair advantages).
Ash Ali (The Unfair Advantage: How You Already Have What It Takes to Succeed)
[...] For me Mr. Madani was a lesson in how peculiar medicine can be. It is a place where we fool ourselves into thinking that we can somehow get out of life alive and where dialysis is a means to no end. It is a place where the teaching of dialysis practice becomes more permissive within a two-year fellowship stint, more variable from nephrologist to nephrologist. Dialysis has gone from a miracle to something mundane but to be avoided at all costs to the thing we Americans-no matter if rich or poor, Black, Brown, Yellow, or White-cling to, because it holds the promise of more time. We-providers across specialties, patients, and families-begin to expect it, feel entitled to it, demand it, and we won't let go of it, even when it doesn't make sense, even when all it really guarantees is more suffering.
Vanessa Grubbs (Hundreds of Interlaced Fingers: A Kidney Doctor's Search for the Perfect Match)
The earth has warmed during the past century, partly because of natural phenomena and partly in response to growing human influences. These human influences (most importantly the accumulation of CO2 from burning fossil fuels) exert a physically small effect on the complex climate system. Unfortunately, our limited observations and understanding are insufficient to usefully quantify either how the climate will respond to human influences or how it varies naturally. However, even as human influences have increased almost fivefold since 1950 and the globe has warmed modestly, most severe weather phenomena remain within past variability. Projections of future climate and weather events rely on models demonstrably unfit for the purpose. Later,
Steven E. Koonin (Unsettled: What Climate Science Tells Us, What It Doesn’t, and Why It Matters)
The official difference between anonymous and named function expressions is that the latter binds its name as a local variable within the function. This can be used to write recursive function expressions:
David Herman (Effective JavaScript: 68 Specific Ways to Harness the Power of JavaScript)
Existentialists concern themselves with individual, concrete human existence. — They consider human existence different from the kind of being other things have. Other entities are what they are, but as a human I am whatever I choose to make of myself at every moment. I am free — — and therefore I’m responsible for everything I do, a dizzying fact which causes — an anxiety inseparable from human existence itself. — On the other hand, I am only free within situations, which can include factors in my own biology and psychology as well as physical, historical and social variables of the world into which I have been thrown. — Despite the limitations, I always want more: I am passionately involved in personal projects of all kinds. — Human existence is thus ambiguous: at once boxed in by borders and yet transcendent and exhilarating. — An existentialist who is also phenomenological provides no easy rules for dealing with this condition, but instead concentrates on describing lived experience as it presents itself. — By describing experience well, he or she hopes to understand this existence and awaken us to ways of living more authentic lives.
Sarah Bakewell (At the Existentialist Café: Freedom, Being, and Apricot Cocktails with Jean-Paul Sartre, Simone de Beauvoir, Albert Camus, Martin Heidegger, Maurice Merleau-Ponty and Others)
This book describes a clinical map of the abduction territory, which I believe shows that we are dealing with a phenomenon that may not originate in our physical reality but penetrates variably into it or manifests within it in a variety of ways.
John E. Mack (Abduction: Human Encounters with Aliens)
As I suggested before, temporary variables can be a problem. They are only useful within their own routine, and therefore they encourage long, complex routines.
Martin Fowler (Refactoring: Improving the Design of Existing Code (Addison-Wesley Signature Series (Fowler)))
Suppose a researcher were to tap you on the shoulder and ask you to write down what, according to cultural lore, males and females are like. Would you stare at the researcher blankly and exclaim ‘But what can you mean? Every person is a unique, multifaceted, sometimes even contradictory individual, and with such an astonishing range of personality traits within each sex, and across contexts, social class, age, experience, educational level, sexuality and ethnicity, it would be pointless and meaningless to attempt to pigeonhole such rich complexity and variability into two crude stereotypes’? No. You’d pick up your pencil and start writing.
Jacky Kilvington, Ali Wood, Gender Sex and Children's Play
Differences between the relatively promiscuous Ache and the relatively monogamous Hiwi also illuminate the cultural variability of human sexual strategies. The different ratios of males to females in these two cultures may be the critical factor in eliciting a different sexual strategy. Among the Ache, there are approximately one and a half women for every man. Among the Hiwi, there are more men than women, although precise numbers are not available. The prevalence of available Ache women creates sexual opportunities for Ache men not experienced by Hiwi men. Ache men seize these opportunities, as evidenced by the high frequency of mate switching and casual affairs. Ache men can pursue a temporary sexual strategy more successfully than Hiwi men can. Hiwi women are better able than Ache women to secure a high investment from men, who must provide resources to attract and retain a mate.19 The cultural shifts witnessed today, such as the hookup culture on college campuses and in large urban settings and the rise of casual sex and online dating apps such as Tinder, probably reflect shifts in mating strategies as a function of a perceived or real sex ratio imbalance. One key cultural variable centers on the presumptive mating system, especially monogamy and polygamy. Some Islamic cultures permit men to marry up to four wives, as specified in the Qur’an. In parts of Utah and Texas in the United States, some fundamentalist Mormon groups place no formal limits on the number of wives a man can marry, and a few marry more than a dozen. Even presumptively monogamous cultures are often effectively polygynous, with some men having multiple mates through serial marriage or affair partners. The more polygynous the culture, the more some men will be inclined to pursue high-risk tactics in an effort to gain status, resources, and mates, either in the current life or in aspirational notions of life after death. Just as mating is a key cause of violence among nonhuman animals from elk to elephant seals, mating and violence are inexorably linked in our own species. Evolved mating strategies are influenced by, and implemented within, these key cultural contexts
David M. Buss (The Evolution Of Desire: Strategies of Human Mating)
it should be noted that an essential variable within the psychotherapeutic process is the client's motivation or willingness to change. If this element is missing, it is difficult or impossible to make any progress, as most mental health professionals will attest. This requires that the client take responsibility for his or her behavior and choices, and exert effort to make the necessary changes.
Aisha Utz (Psychology from the Islamic Perspective)
behind, defying gravity, and embarking on a journey of unexpected variables within predictable patterns toward a deliberate destination. In other words, both require a little bit of crazy and a whole lot of courage!
T.D. Jakes (Soar!: Build Your Vision from the Ground Up)
Because it is nearly impossible to get fired once you’re in, Next Jump takes much more time and is a lot more discerning about who they hire than a lot of other companies in their industry. They don’t just consider skills and experience; they spend a lot of time evaluating the character of the candidates who want to work there. For every one hundred candidates, only one will get a job. “If a leader was told from here on you cannot fire anyone,” Kim explains, “but you must still meet consistent growth in revenue and profits, despite market conditions, they would have no choice but to turn to other variables within their control like hiring, training and development.” Once someone gets in, the leaders of Next Jump make it their priority to help that person grow.
Simon Sinek (Leaders Eat Last: Why Some Teams Pull Together and Others Don't)
Inheritance is the idea that one class is a specialization of another class. The purpose of inheritance is to create simpler code by defining a base class that specifies common elements of two or more derived classes. The common elements can be routine interfaces, implementations, data members, or data types. Inheritance helps avoid the need to repeat code and data in multiple locations by centralizing it within a base class. When you decide to use inheritance, you have to make several decisions: For each member routine, will the routine be visible to derived classes? Will it have a default implementation? Will the default implementation be overridable? For each data member (including variables, named constants, enumerations, and so on), will the data member be visible to derived classes?
Steve McConnell (Code Complete)
Scheffe tests also produce “homogeneous subsets,” that is, groups that have statistically identical means. Both the three largest and the three smallest populations have identical means. The Tukey levels of statistical significance are, respectively, .725 and .165 (both > .05). This is shown in Table 13.3. Figure 13.2 Group Boxplots Table 13.2 ANOVA Table Third, is the increase in means linear? This test is an option on many statistical software packages that produces an additional line of output in the ANOVA table, called the “linear term for unweighted sum of squares,” with the appropriate F-test. Here, that F-test statistic is 7.85, p = .006 < .01, and so we conclude that the apparent linear increase is indeed significant: wetland loss is linearly associated with the increased surrounding population of watersheds.8 Figure 13.2 does not clearly show this, but the enlarged Y-axis in Figure 13.3 does. Fourth, are our findings robust? One concern is that the statistical validity is affected by observations that statistically (although not substantively) are outliers. Removing the seven outliers identified earlier does not affect our conclusions. The resulting variable remains normally distributed, and there are no (new) outliers for any group. The resulting variable has equal variances across the groups (Levene’s test = 1.03, p = .38 > .05). The global F-test is 3.44 (p = .019 < .05), and the Bonferroni post-hoc test similarly finds that only the differences between the “Small” and “Large” group means are significant (p = .031). The increase remains linear (F = 6.74, p = .011 < .05). Thus, we conclude that the presence of observations with large values does not alter our conclusions. Table 13.3 Homogeneous Subsets Figure 13.3 Watershed Loss, by Population We also test the robustness of conclusions for different variable transformations. The extreme skewness of the untransformed variable allows for only a limited range of root transformations that produce normality. Within this range (power 0.222 through 0.275), the preceding conclusions are replicated fully. Natural log and base-10 log transformations also result in normality and replicate these results, except that the post-hoc tests fail to identify that the means of the “Large” and “Small” groups are significantly different. However, the global F-test is (marginally) significant (F = 2.80, p = .043 < .05), which suggests that this difference is too small to detect with this transformation. A single, independent-samples t-test for this difference is significant (t = 2.47, p = .017 < .05), suggesting that this problem may have been exacerbated by the limited number of observations. In sum, we find converging evidence for our conclusions. As this example also shows, when using statistics, analysts frequently must exercise judgment and justify their decisions.9 Finally, what is the practical significance of this analysis? The wetland loss among watersheds with large surrounding populations is [(3.21 – 2.52)/2.52 =] 27.4 percent greater than among those surrounded by small populations. It is up to managers and elected officials to determine whether a difference of this magnitude warrants intervention in watersheds with large surrounding populations.10
Evan M. Berman (Essential Statistics for Public Managers and Policy Analysts)
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In my work, I try to create situations in which we take ideas, information, experiences and qualities to a pragmatic arena. Then within those, to relearn or experiment with how we respond to internal and external variables. There’s no point to understanding something but remaining incapable of applying it. I think real knowledge and understanding is experiential, and the easiest way to access those is through our physical being.
Darrell Calkins
categorical and the dependent variable is continuous. The logic of this approach is shown graphically in Figure 13.1. The overall group mean is (the mean of means). The boxplots represent the scores of observations within each group. (As before, the horizontal lines indicate means, rather than medians.) Recall that variance is a measure of dispersion. In both parts of the figure, w is the within-group variance, and b is the between-group variance. Each graph has three within-group variances and three between-group variances, although only one of each is shown. Note in part A that the between-group variances are larger than the within-group variances, which results in a large F-test statistic using the above formula, making it easier to reject the null hypothesis. Conversely, in part B the within-group variances are larger than the between-group variances, causing a smaller F-test statistic and making it more difficult to reject the null hypothesis. The hypotheses are written as follows: H0: No differences between any of the group means exist in the population. HA: At least one difference between group means exists in the population. Note how the alternate hypothesis is phrased, because the logical opposite of “no differences between any of the group means” is that at least one pair of means differs. H0 is also called the global F-test because it tests for differences among any means. The formulas for calculating the between-group variances and within-group variances are quite cumbersome for all but the simplest of designs.1 In any event, statistical software calculates the F-test statistic and reports the level at which it is significant.2 When the preceding null hypothesis is rejected, analysts will also want to know which differences are significant. For example, analysts will want to know which pairs of differences in watershed pollution are significant across regions. Although one approach might be to use the t-test to sequentially test each pair of differences, this should not be done. It would not only be a most tedious undertaking but would also inadvertently and adversely affect the level of significance: the chance of finding a significant pair by chance alone increases as more pairs are examined. Specifically, the probability of rejecting the null hypothesis in one of two tests is [1 – 0.952 =] .098, the probability of rejecting it in one of three tests is [1 – 0.953 =] .143, and so forth. Thus, sequential testing of differences does not reflect the true level of significance for such tests and should not be used. Post-hoc tests test all possible group differences and yet maintain the true level of significance. Post-hoc tests vary in their methods of calculating test statistics and holding experiment-wide error rates constant. Three popular post-hoc tests are the Tukey, Bonferroni, and Scheffe tests.
Evan M. Berman (Essential Statistics for Public Managers and Policy Analysts)
A crime risk model dehumanizes the prior offender by paring him or her down to the extremely limited view captured by a small number of characteristics (variables input to a predictive model). But, if the integration of PA promises to lower the overall crime rate—as well as the expense of unnecessary incarceration—is this within the acceptable realm of compromises to civil liberties one endures when incarcerated in the first place?
Eric Siegel (Predictive Analytics: The Power to Predict Who Will Click, Buy, Lie, or Die)
For instance, there is a broad consensus that there has been greater hurricane activity in the North Atlantic since 1970. However, there is also a broad consensus that the increase since 1970 falls within the variability observed in North Atlantic hurricanes observed since 1900.[51] Thus, “climate change” as defined by the IPCC has not been detected with respect to hurricanes.
Roger Pielke (The Rightful Place of Science: Disasters and Climate Change)
Analysis of Variance (ANOVA)   CHAPTER OBJECTIVES After reading this chapter, you should be able to Use one-way ANOVA when the dependent variable is continuous and the independent variable is nominal or ordinal with two or more categories Understand the assumptions of ANOVA and how to test for them Use post-hoc tests Understand some extensions of one-way ANOVA This chapter provides an essential introduction to analysis of variance (ANOVA). ANOVA is a family of statistical techniques, the most basic of which is the one-way ANOVA, which provides an essential expansion of the t-test discussed in Chapter 12. One-way ANOVA allows analysts to test the effect of a continuous variable on an ordinal or nominal variable with two or more categories, rather than only two categories as is the case with the t-test. Thus, one-way ANOVA enables analysts to deal with problems such as whether the variable “region” (north, south, east, west) or “race” (Caucasian, African American, Hispanic, Asian, etc.) affects policy outcomes or any other matter that is measured on a continuous scale. One-way ANOVA also allows analysts to quickly determine subsets of categories with similar levels of the dependent variable. This chapter also addresses some extensions of one-way ANOVA and a nonparametric alternative. ANALYSIS OF VARIANCE Whereas the t-test is used for testing differences between two groups on a continuous variable (Chapter 12), one-way ANOVA is used for testing the means of a continuous variable across more than two groups. For example, we may wish to test whether income levels differ among three or more ethnic groups, or whether the counts of fish vary across three or more lakes. Applications of ANOVA often arise in medical and agricultural research, in which treatments are given to different groups of patients, animals, or crops. The F-test statistic compares the variances within each group against those that exist between each group and the overall mean: Key Point ANOVA extends the t-test; it is used when the independent variable is
Evan M. Berman (Essential Statistics for Public Managers and Policy Analysts)
suffered greater wetland loss than watersheds with smaller surrounding populations. Most watersheds have suffered no or only very modest losses (less than 3 percent during the decade in question), and few watersheds have suffered more than a 4 percent loss. The distribution is thus heavily skewed toward watersheds with little wetland losses (that is, to the left) and is clearly not normally distributed.6 To increase normality, the variable is transformed by twice taking the square root, x.25. The transformed variable is then normally distributed: the Kolmogorov-Smirnov statistic is 0.82 (p = .51 > .05). The variable also appears visually normal for each of the population subgroups. There are four population groups, designed to ensure an adequate number of observations in each. Boxplot analysis of the transformed variable indicates four large and three small outliers (not shown). Examination suggests that these are plausible and representative values, which are therefore retained. Later, however, we will examine the effect of these seven observations on the robustness of statistical results. Descriptive analysis of the variables is shown in Table 13.1. Generally, large populations tend to have larger average wetland losses, but the standard deviations are large relative to (the difference between) these means, raising considerable question as to whether these differences are indeed statistically significant. Also, the untransformed variable shows that the mean wetland loss is less among watersheds with “Medium I” populations than in those with “Small” populations (1.77 versus 2.52). The transformed variable shows the opposite order (1.06 versus 0.97). Further investigation shows this to be the effect of the three small outliers and two large outliers on the calculation of the mean of the untransformed variable in the “Small” group. Variable transformation minimizes this effect. These outliers also increase the standard deviation of the “Small” group. Using ANOVA, we find that the transformed variable has unequal variances across the four groups (Levene’s statistic = 2.83, p = .41 < .05). Visual inspection, shown in Figure 13.2, indicates that differences are not substantial for observations within the group interquartile ranges, the areas indicated by the boxes. The differences seem mostly caused by observations located in the whiskers of the “Small” group, which include the five outliers mentioned earlier. (The other two outliers remain outliers and are shown.) For now, we conclude that no substantial differences in variances exist, but we later test the robustness of this conclusion with consideration of these observations (see Figure 13.2). Table 13.1 Variable Transformation We now proceed with the ANOVA analysis. First, Table 13.2 shows that the global F-test statistic is 2.91, p = .038 < .05. Thus, at least one pair of means is significantly different. (The term sum of squares is explained in note 1.) Getting Started Try ANOVA on some data of your choice. Second, which pairs are significantly different? We use the Bonferroni post-hoc test because relatively few comparisons are made (there are only four groups). The computer-generated results (not shown in Table 13.2) indicate that the only significant difference concerns the means of the “Small” and “Large” groups. This difference (1.26 - 0.97 = 0.29 [of transformed values]) is significant at the 5 percent level (p = .028). The Tukey and Scheffe tests lead to the same conclusion (respectively, p = .024 and .044). (It should be noted that post-hoc tests also exist for when equal variances are not assumed. In our example, these tests lead to the same result.7) This result is consistent with a visual reexamination of Figure 13.2, which shows that differences between group means are indeed small. The Tukey and
Evan M. Berman (Essential Statistics for Public Managers and Policy Analysts)
Table 14.1 also shows R-square (R2), which is called the coefficient of determination. R-square is of great interest: its value is interpreted as the percentage of variation in the dependent variable that is explained by the independent variable. R-square varies from zero to one, and is called a goodness-of-fit measure.5 In our example, teamwork explains only 7.4 percent of the variation in productivity. Although teamwork is significantly associated with productivity, it is quite likely that other factors also affect it. It is conceivable that other factors might be more strongly associated with productivity and that, when controlled for other factors, teamwork is no longer significant. Typically, values of R2 below 0.20 are considered to indicate weak relationships, those between 0.20 and 0.40 indicate moderate relationships, and those above 0.40 indicate strong relationships. Values of R2 above 0.65 are considered to indicate very strong relationships. R is called the multiple correlation coefficient and is always 0 ≤ R ≤ 1. To summarize up to this point, simple regression provides three critically important pieces of information about bivariate relationships involving two continuous variables: (1) the level of significance at which two variables are associated, if at all (t-statistic), (2) whether the relationship between the two variables is positive or negative (b), and (3) the strength of the relationship (R2). Key Point R-square is a measure of the strength of the relationship. Its value goes from 0 to 1. The primary purpose of regression analysis is hypothesis testing, not prediction. In our example, the regression model is used to test the hypothesis that teamwork is related to productivity. However, if the analyst wants to predict the variable “productivity,” the regression output also shows the SEE, or the standard error of the estimate (see Table 14.1). This is a measure of the spread of y values around the regression line as calculated for the mean value of the independent variable, only, and assuming a large sample. The standard error of the estimate has an interpretation in terms of the normal curve, that is, 68 percent of y values lie within one standard error from the calculated value of y, as calculated for the mean value of x using the preceding regression model. Thus, if the mean index value of the variable “teamwork” is 5.0, then the calculated (or predicted) value of “productivity” is [4.026 + 0.223*5 =] 5.141. Because SEE = 0.825, it follows that 68 percent of productivity values will lie 60.825 from 5.141 when “teamwork” = 5. Predictions of y for other values of x have larger standard errors.6 Assumptions and Notation There are three simple regression assumptions. First, simple regression assumes that the relationship between two variables is linear. The linearity of bivariate relationships is easily determined through visual inspection, as shown in Figure 14.2. In fact, all analysis of relationships involving continuous variables should begin with a scatterplot. When variable
Evan M. Berman (Essential Statistics for Public Managers and Policy Analysts)
other and distinct from other groups. These techniques usually precede regression and other analyses. Factor analysis is a well-established technique that often aids in creating index variables. Earlier, Chapter 3 discussed the use of Cronbach alpha to empirically justify the selection of variables that make up an index. However, in that approach analysts must still justify that variables used in different index variables are indeed distinct. By contrast, factor analysis analyzes a large number of variables (often 20 to 30) and classifies them into groups based on empirical similarities and dissimilarities. This empirical assessment can aid analysts’ judgments regarding variables that might be grouped together. Factor analysis uses correlations among variables to identify subgroups. These subgroups (called factors) are characterized by relatively high within-group correlation among variables and low between-group correlation among variables. Most factor analysis consists of roughly four steps: (1) determining that the group of variables has enough correlation to allow for factor analysis, (2) determining how many factors should be used for classifying (or grouping) the variables, (3) improving the interpretation of correlations and factors (through a process called rotation), and (4) naming the factors and, possibly, creating index variables for subsequent analysis. Most factor analysis is used for grouping of variables (R-type factor analysis) rather than observations (Q-type). Often, discriminant analysis is used for grouping of observations, mentioned later in this chapter. The terminology of factor analysis differs greatly from that used elsewhere in this book, and the discussion that follows is offered as an aid in understanding tables that might be encountered in research that uses this technique. An important task in factor analysis is determining how many common factors should be identified. Theoretically, there are as many factors as variables, but only a few factors account for most of the variance in the data. The percentage of variation explained by each factor is defined as the eigenvalue divided by the number of variables, whereby the
Evan M. Berman (Essential Statistics for Public Managers and Policy Analysts)
The lawyer’s stakes at the table turned out to be not even colonial notes of the usual baffling variability, but certificates drawable upon a tobacco warehouse in Virginia, and Smith presented one without much hope, the first time he tried their use as payment. But it was accepted without demur, at fifty-five per centum of face, New-York’s merchants seeming all to maintain within themselves a register of values for every conceivable money-substitute they might encounter. Wampum, tobacco bales, rum by the gallon: it was all money, in a world without money. Between the tobacco tickets and his own pointedly-returned guineas, Smith calculated he now possessed enough to reach Christmas in relative ease – if he could avoid being knocked on the head for spoiling De Lancey’s game against the Governor, or offending in some other role pressed upon him, or falling victim to a misadventure entirely unsuspected.
Francis Spufford (Golden Hill)