Blog Archives

Bayesian workshops, June and August 2017

April 16, 2017
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Bayesian workshops, June and August 2017

Upcoming multi-day workshops in doing Bayesian data analysis (2017):June 5 - 9. Stats Camp, Albuquerque, New Mexico (USA). Taught by Prof. John Kruschke. June 12 - 16. Global School for Empirical Research Methods, St. Gallen, Switzerland. Taught by ...

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Trade-off of between-group and within-group variance (and implosive shrinkage)

April 8, 2017
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Background: Consider data that would traditionally be analyzed as single-factor ANOVA; that is, a continuous metric predicted variable, \(y\), and a nominal predictor, "Group." In particular, consider the data plotted as red dots here:A Bayesian approa...

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A foolish prior on consistency is the howling of shrunken minds

April 2, 2017
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A foolish prior on consistency is the howling of shrunken minds

(Photo from Professor Sylvain Fiset's web site.)Professor Sylvain Fiset has been using Bayesian methods (from DBDA2E)  to analyze short-term memory of dogs. In each experimental trial, a dog watched a human experimenter tuck away a treat in one of...

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Doggerel Doggies: The Generalized Linear Model

March 5, 2017
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Doggerel Doggies: The Generalized Linear Model

The opening "poem" from Chapter 15 of DBDA2E. The color coding explains the correspondence of metaphor to math.

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Workshops & courses doing Bayesian data analysis, June – Aug 2017

February 23, 2017
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Workshops & courses doing Bayesian data analysis, June – Aug 2017

Upcoming multi-day workshops in doing Bayesian data analysis (2017):June 5 - 9. Stats Camp, Albuquerque, New Mexico (USA). Taught by Prof. John Kruschke. June 12 - 16. Global School for Empirical Research Methods, St. Gallen, Switzerland. Taught by ...

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Interpreting Bayesian posterior distribution of a parameter: Is density meaningful?

February 19, 2017
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Interpreting Bayesian posterior distribution of a parameter: Is density meaningful?

Background: Suppose a researcher is interested in the Bayesian posterior distribution of a parameter, because the parameter is directly meaningful in the research domain. This occurs, for example, in psychometrics. Specifically, in item response theory...

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Equivalence testing (two one-sided test) and NHST compared with HDI and ROPE

February 16, 2017
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Equivalence testing (two one-sided test) and NHST compared with HDI and ROPE

In this blog post I show that frequentist equivalence testing (using the procedure of two one-sided tests: TOST) with null hypothesis significance testing (NHST) can produce conflicting decisions for the same parameter values, that is, TOST can accept ...

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The Bayesian New Statistics – finally published

February 8, 2017
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The Bayesian New Statistics – finally published

The Bayesian New Statistics: Hypothesis testing, estimation, meta-analysis, and power analysis from a Bayesian perspective.Abstract: In the practice of data analysis, there is a conceptual distinction between hypothesis testing, on the one hand, and es...

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Courses doing Bayesian data analysis, June 2017

January 29, 2017
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Courses doing Bayesian data analysis, June 2017

UPDATED >HERE<. Choose from two multi-day workshops doing Bayesian data analysis in June, 2017:2017 June 20 - 23. Four-day course. Interuniversity Consortium for Political and Social Research (ICPSR), Ann Arbor, Michigan. 2017 June 5 - 9. Five-da...

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Bayesian assessment of null values

December 21, 2016
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Bayesian assessment of null values

A blog post by Christian Robert considered an ancient (2011!) article titled "Bayesian assessment of null values via parameter estimation and model comparison." Here I'll try to clarify the ideas from way back then through the lens of more recent diagr...

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