Blog Archives

Bayesian estimation of correlations and differences of correlations with a multivariate normal

June 26, 2017
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Bayesian estimation of correlations and differences of correlations with a multivariate normal

Within days of each other I received two emails asking about Bayesian estimation of correlations and differences of correlations. Hence this post, which presents an implementation in JAGS and R.Traditionally, a joint distribution of several continuous/...

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Posterior distribution of predictions in multiple linear regression

June 11, 2017
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Posterior distribution of predictions in multiple linear regression

In a previous post I showed how to compute posterior predictions from multiple linear regression inside JAGS. In this post I show how to do it after JAGS, in R.There are trade-offs doing it in JAGS or afterwards in R. If you do it in JAGS, then you kno...

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New version of BEST package (Bayesian estimation of two groups)

May 29, 2017
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New version of BEST package (Bayesian estimation of two groups)

Mike Meredith has updated the BEST package again! CHANGES in v.0.5.0 (2017-05-28) * 'BESTmcmc' uses 'rjags' directly, instead of 'jagsUI' wrappers. This resolves 'set.seed' issues, but values returned will not be the same as with previous version...

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Looking for great teachers of Bayesian statistics

May 25, 2017
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Looking for great teachers of Bayesian statistics

I'm looking for great teachers of Bayesian statistics! Have you taught a course in Bayesian statistics? Have you used DBDA2E? Are you an enthusiastic teacher with very high evaluations?Do you have an abiding interest in a range of applied sta...

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Bent Coins for a Twisted Mind

May 4, 2017
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Bent Coins for a Twisted Mind

Ben Motz voluntarily sat through an entire semester of my Bayesian stats course. In karmic retribution, after the conclusion of the course he surprised me with a set of biased coins that he designed and created with the amazing craftsmanship of Jesse ...

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Bayesian workshops, June 2017

April 16, 2017
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Bayesian workshops, June 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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