Blog Archives

Numerical pitfalls in computing variance

May 3, 2016
By

One of the most common tasks in statistical computing is computation of sample variance. This would seem to be straightforward; there are a number of algebraically equivalent ways of representing the sum of squares \(S\), such as \ or \ and...

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Numerical pitfalls in computing variance

May 3, 2016
By

One of the most common tasks in statistical computing is computation of sample variance. This would seem to be straightforward; there are a number of algebraically equivalent ways of representing the sum of squares (S), such as or and...

Read more »

How to check Likert scale summaries for plausibility

March 30, 2016
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Suppose you are reading a paper that uses Likert scale responses. The paper reports the mean, standard deviation, and number of responses. If we are -- for some reason -- suspicious of a paper, we might ask, "Are these summary statistics possible for t...

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How to check Likert scale summaries for plausibility

March 30, 2016
By

Suppose you are reading a paper that uses Likert scale responses. The paper reports the mean, standard deviation, and number of responses. If we are -- for some reason -- suspicious of a paper, we might ask, "Are these summary statistics possible for this number of responses, for this Likert scale?" Someone asked me this recently, so I wrote...

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BayesFactor version 0.9.12-2 released to CRAN

September 24, 2015
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I've released BayesFactor 0.9.12-2 to CRAN; it should be available on all platforms now. The changes include:Added feature allowing fine-tuning of priors on a per-effect basis: see new argument rscaleEffects of lmBF, anovaBF, and generalTestBFFixed bug...

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BayesFactor version 0.9.12-2 released to CRAN

September 24, 2015
By

I've released BayesFactor 0.9.12-2 to CRAN; it should be available on all platforms now. The changes include:Added feature allowing fine-tuning of priors on a per-effect basis: see new argument rscaleEffects of lmBF, anovaBF, and generalTestBFFixed bug...

Read more »

On radical manuscript openness

August 10, 2015
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On radical manuscript openness

One of my papers that has attracted a lot of attention lately is "The Fallacy of Placing Confidence in Confidence Intervals," in which we describe some of the fallacies held by the proponents and users of confidence intervals. This paper has been discussed on twitter, reddit, on blogs (eg, here and here), and via email with people who found the paper in various places.  A person...

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On radical manuscript openness

August 10, 2015
By
On radical manuscript openness

One of my papers that has attracted a lot of attention lately is "The Fallacy of Placing Confidence in Confidence Intervals," in which we describe some of the fallacies held by the proponents and users of confidence intervals. This paper has been discussed on twitter, reddit, on blogs (eg, here and here), and via email with people who found the paper in various places.  A person...

Read more »

BayesFactor updated to version 0.9.11-1

March 23, 2015
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The BayesFactor package has been updated to version 0.9.11-1. The changes are:  CHANGES IN BayesFactor VERSION 0.9.11-1CHANGES  * Fixed memory bug causing importance sampling to fail.  CHANGES IN BayesFactor VERSION 0.9.11CHANGES  *...

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The frequentist case against the significance test, part 2

March 9, 2015
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The frequentist case against the significance test, part 2

The significance test is perhaps the most used statistical procedure in the world, though has never been without its detractors. This is the second of two posts exploring Neyman's frequentist arguments against the significance test; if you have not read Part 1, you should do so before continuing (“The frequentist case against the significance test, part 1”).Neyman offered two...

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