Blog Archives

Putting the brakes on the breakthrough: An informal look at the argument for the Likelihood Principle

May 1, 2014
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Putting the brakes on the breakthrough: An informal look at the argument for the Likelihood Principle

Friday, May 2, 2014, I will attempt to present my critical analysis of the Birnbaum argument for the (strong) Likelihood Principle, so as to be accessible to a general philosophy audience (flyer below). Can it be done? I don’t know yet, this is a first. It will consist of: Example 1: Trying and Trying Again: Optional stopping […]

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Reliability and Reproducibility: Fraudulent p-values through multiple testing (and other biases): S. Stanley Young (Phil 6334: Day#13)

April 27, 2014
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Reliability and Reproducibility: Fraudulent p-values through multiple testing (and other biases):  S. Stanley Young (Phil 6334: Day#13)

S. Stanley Young, PhD Assistant Director for Bioinformatics National Institute of Statistical Sciences Research Triangle Park, NC Here are Dr. Stanley Young’s slides from our April 25 seminar. They contain several tips for unearthing deception by fraudulent p-value reports. Since it’s Saturday night, you might wish to perform an experiment with three 10-sided dice*,recording the results of 100 rolls (3 at a time) […]

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Phil 6334 Visitor: S. Stanley Young, “Statistics and Scientific Integrity”

April 23, 2014
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Phil 6334 Visitor: S. Stanley Young, “Statistics and Scientific Integrity”

We are pleased to announce our guest speaker at Thursday’s seminar (April 24, 2014): “Statistics and Scientific Integrity”: S. Stanley Young, PhD  Assistant Director for Bioinformatics National Institute of Statistical Sciences Research Triangle Park, NC Author of Resampling-Based Multiple Testing, Westfall and Young (1993) Wiley.       The main readings for the discussion are:  Young, S. & Karr, […]

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Getting Credit (or blame) for Something You Didn’t Do (BP oil spill)

April 20, 2014
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Getting Credit (or blame) for Something You Didn’t Do (BP oil spill)

  Four years ago, many of us were glued to the “spill cam” showing, in real time, the gushing oil from the April 20, 2010 explosion sinking the Deepwater Horizon oil rig in the Gulf of Mexico, killing 11, and spewing oil until July 15 (see video clip that was added below).Remember junk shots, top kill, blowout preventers? [1] The EPA has […]

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A. Spanos: Jerzy Neyman and his Enduring Legacy

April 16, 2014
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A. Spanos: Jerzy Neyman and his Enduring Legacy

A Statistical Model as a Chance Mechanism Aris Spanos  Jerzy Neyman (April 16, 1894 – August 5, 1981), was a Polish/American statistician[i] who spent most of his professional career at the University of California, Berkeley. Neyman is best known in statistics for his pioneering contributions in framing the Neyman-Pearson (N-P) optimal theory of hypothesis testing […]

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Phil 6334: Notes on Bayesian Inference: Day #11 Slides

April 14, 2014
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Phil 6334: Notes on Bayesian Inference: Day #11 Slides

  A. Spanos Probability/Statistics Lecture Notes 7: An Introduction to Bayesian Inference (4/10/14) Spanos lecture 7: An Introduction to Bayesian Inference from jemille6 Filed under: Bayesian/frequentist, Phil 6334 class material, Statistics

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“Murder or Coincidence?” Statistical Error in Court: Richard Gill (TEDx video)

April 12, 2014
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“Murder or Coincidence?” Statistical Error in Court: Richard Gill (TEDx video)

“There was a vain and ambitious hospital director. A bad statistician. ..There were good medics and bad medics, good nurses and bad nurses, good cops and bad cops … Apparently, even some people in the Public Prosecution service found the witch hunt deeply disturbing.” This is how Richard Gill, statistician at Leiden University, describes a […]

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“Out Damned Pseudoscience: Non-significant results are the new ‘Significant’ results!” (update)

April 9, 2014
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“Out Damned Pseudoscience: Non-significant results are the new ‘Significant’ results!” (update)

We were reading “Out, Damned Spot: Can the ‘Macbeth effect’ be replicated?” (Earp,B., Everett,J., Madva,E., and Hamlin,J. 2014, in Basic and Applied Social Psychology 36: 91-8) in an informal gathering of our 6334 seminar yesterday afternoon at Thebes. Some of the graduate students are interested in so-called “experimental” philosophy, and I asked for an example that used statistics […]

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Who is allowed to cheat? I.J. Good and that after dinner comedy hour….

April 5, 2014
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Who is allowed to cheat? I.J. Good and that after dinner comedy hour….

It was from my Virginia Tech colleague I.J. Good (in statistics), who died five years ago (April 5, 2009), at 93, that I learned most of what I call “howlers” on this blog. His favorites were based on the “paradoxes” of stopping rules. (I had posted this last year here.) “In conversation I have emphasized to other statisticians, […]

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Skeptical and enthusiastic Bayesian priors for beliefs about insane asylum renovations at Dept of Homeland Security: I’m skeptical and unenthusiastic

April 1, 2014
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Skeptical and enthusiastic Bayesian priors for beliefs about insane asylum renovations at Dept of Homeland Security: I’m skeptical and unenthusiastic

I had heard of medical designs that employ individuals who supply Bayesian subjective priors that are deemed either “enthusiastic” or “skeptical” as regards the probable value of medical treatments.[i] From what I gather, these priors are combined with data from trials in order to help decide whether to stop trials early or continue. But I’d never heard of […]

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