Posts Tagged ‘ Miscellaneous Statistics ’

Regression: What’s it all about? [Bayesian and otherwise]

March 29, 2015
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Regression: What’s it all about? Regression plays three different roles in applied statistics: 1. A specification of the conditional expectation of y given x; 2. A generative model of the world; 3. A method for adjusting data to generalize from sample to population, or to perform causal inferences. We could also include prediction, but I […] The post Regression: What’s it all about? [Bayesian and otherwise] appeared first on Statistical…

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Paul Meehl continues to be the boss

March 23, 2015
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Lee Sechrest writes: Here is a remarkable paper, not well known, by Paul Meehl. My research group is about to undertake a fresh discussion of it, which we do about every five or ten years. The paper is now more than a quarter of a century old but it is, I think, dramatically pertinent to […] The post Paul Meehl continues to be the boss appeared first on Statistical Modeling,…

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“In general I think these literatures have too much focus on data analysis and not enough on data collection.”

March 15, 2015
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Mike Zyphur pointed me to an article appearing in Psychological Bulletin with a meta-analysis of ovulatory cycle effects: Title: Do Women’s Mate Preferences Change Across the Ovulatory Cycle? A Meta-Analytic Review Authors: Gildersleeve, K; Haselton, MG; Fales, MR Source: PSYCHOLOGICAL BULLETIN , 140 (5):1205-1259; SEP 2014 Abstract: Scientific interest in whether women experience changes across […] The post “In general I think these literatures have too much focus on data…

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Stock-and-flow and other concepts that are important in statistical modeling but typically don’t get taught to statisticians

March 12, 2015
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Bill Harris writes: You’ve written about causality somewhat often, and you, along with perhaps everyone who has done anything with statistics, have written that “correlation is not causation.” When you say that correlation is not causation, you seem to be pointing out cases where correlation exists but causality does not. While that’s important, there’s another […] The post Stock-and-flow and other concepts that are important in statistical modeling but typically…

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“Voices from everywhere saying gently: This we praise. This we don’t.”

March 10, 2015
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One of America’s leading political columnists, David Brooks, has just come out with a column called “The Cost of Relativism” about the growing chasm between college-educated America and those who write for major newspapers. It’s got a definitive collection of data about this divide. Just kidding about the “definitive collection of data.” Anyway, to continue: […] The post “Voices from everywhere saying gently: This we praise. This we don’t.” appeared…

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Interactive demonstrations for linear and Gaussian process regressions

March 7, 2015
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Interactive demonstrations for linear and Gaussian process regressions

Here’s a cool interactive demo of linear regression where you can grab the data points, move them around, and see the fitted regression line changing. There are various such apps around, but this one is particularly clean: (I’d like to credit the creator but I can’t find any attribution at the link, except that it’s […] The post Interactive demonstrations for linear and Gaussian process regressions appeared first on Statistical…

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“The Saturated Fat Studies: Set Up to Fail”

March 6, 2015
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Russ Lyons points me to this recent magazine article by Martijn Katan and a research article, “Diet and Serum Cholesterol: Do zero correlations negate the relationship?” by David Jacobs, Joseph Anderson, and Henry Blackburn, and this video by Michael Greger. This is interesting stuff, especially as the ultimate truth is still very unknown. It’s good […] The post “The Saturated Fat Studies: Set Up to Fail” appeared first on Statistical…

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These are the statistics papers you just have to read

March 4, 2015
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Here. And here. Just kidding. Here’s the real story. Susanna Makela writes: A few of us want to start a journal club for the statistics PhD students. The idea is to read important papers that we might not otherwise read, maybe because they’re not directly related to our area of research/we don’t have time/etc. What […] The post These are the statistics papers you just have to read appeared first…

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What hypothesis testing is all about. (Hint: It’s not what you think.)

March 2, 2015
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What hypothesis testing is all about.  (Hint:  It’s not what you think.)

I’ve said it before but it’s worth saying again. The conventional view: Hyp testing is all about rejection. The idea is that if you reject the null hyp at the 5% level, you have a win, you have learned that a certain null model is false and science has progressed, either in the glamorous “scientific […] The post What hypothesis testing is all about. (Hint: It’s not what you think.)…

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“Precise Answers to the Wrong Questions”

March 1, 2015
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Our friend K? (not to be confused with X) seeks pre-feedback on this talk: Can we get a mathematical framework for applying statistics that better facilitates communication with non-statisticians as well as helps statisticians avoid getting “precise answers to the wrong questions*”? Applying statistics involves communicating with non-statisticians so that we grasp their applied problems […] The post “Precise Answers to the Wrong Questions” appeared first on Statistical Modeling, Causal…

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