Blog Archives

The Bayesian New Statistics: Two Historical Trends Converge

May 14, 2015
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The Bayesian New Statistics: Two Historical Trends Converge

If not null hypothesis significance testing, then what? If not p values, then confidence intervals? If not NHST, then Bayes factors? Both? Neither? These issues are addressed in a new manuscript titled The Bayesian New Statistics: Two Historical Trends...

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Updated DBDA2E programs for number of MCMC chains and parallel chains in runjags

May 7, 2015
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Updated DBDA2E programs for number of MCMC chains and parallel chains in runjags

The DBDA2E programs have been updated so they deal better with parallel chains in runjags and the number of cores available on your computer. The new programs are available as this zip folder also linked at the book's software page. There are 29 modifi...

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Graphics Window for MacOS and RStudio Server

May 2, 2015
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It's been a recurring headache to get graphics windows to open seamlessly in MacOS and Windows, running RStudio locally and RStudio Server. A solution has been proposed by Professor David Zeitler. He has modified the openGraph function in the DBDA2E-ut...

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Informed priors for Bayesian comparison of two groups

April 29, 2015
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The BEST programs, for Bayesian estimation of two groups, were written with generic vague priors only minimally informed by the scale of the data. Here are new versions of the programs that are better suited for specifying informed priors.A little back...

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Final days for early registration prices at Stats Camp (including Bayesian course)

April 27, 2015
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Final days for early registration prices at Stats Camp (including Bayesian course)

Early registration prices end this week for Doing Bayesian Data Analysis, June 1 - 5, 2015, a five-day course offered through Stats Camp convened in Dallas, Texas.The web page for the June 1-5 workshop is here.Other workshops are listed here. 

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Bayesian comparison of groups using Python emcee

April 24, 2015
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Bayesian comparison of groups using Python emcee

Prof. Brain Blais has implemented the BEST model of two groups in emcee, a Python system for MCMC sampling. See his post about it here.

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Doing Bayesian data analysis again at Bernoulli’s grave

April 14, 2015
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Doing Bayesian data analysis again at Bernoulli’s grave

The 2nd Edition of the book visited the grave of Jacob Bernoulli (1655-1705) in Basel, Switzerland. Jacob Bernoulli pre-dated Bayes (1701-1761), of course, but Bernoulli established foundational concepts and theorems of probability. The photos below we...

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Power is of two kinds (or: Gandhi, power, fear, love, and statistics)

April 12, 2015
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Power is of two kinds (or: Gandhi, power, fear, love, and statistics)

In the chapter of DBDA2E on Goals, Power, and Sample Size (p. 384), I quoted the Mahatma Gandhi:"Power is of two kinds. One is obtained by the fear of punishment and the other by arts of love. Power based on love is a thousand times more effective and ...

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June and July workshops in doing Bayesian data analysis

March 22, 2015
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June and July workshops in doing Bayesian data analysis

June and July courses in Bayesian statistics. A full list of workshops in doing Bayesian data analysis is here. Upcoming workshops include these:2015 June 1 - 5. Five-day course: Doing Bayesian Data Analysis, at Stats Camp, Dallas, Texas.2015 June 15-1...

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"Is the call to abandon p-values the red herring of the replicability crisis?"

February 26, 2015
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"Is the call to abandon p-values the red herring of the replicability crisis?"

In an opinion article [here] titled "Is the call to abandon p-values the red herring of the replicability crisis?", Victoria Savalei and Elizabeth Dunn concluded, "at present we lack empirical evidence that encouraging researchers to abandon p-values ...

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