Workshop-New Date!

Posted on September 19, 2021 by Mayo

The Statistics Wars
and Their Casualties

New Date!

4-5 April 2022

London School of Economics (CPNSS)

Yoav Benjamini (Tel Aviv University), Alexander Bird (University of Cambridge), Mark Burgman (Imperial College London),  Daniele Fanelli (London School of Economics and Political Science), Roman Frigg (London School of Economics and Political Science), Stephen Guttinger (University of Exeter), David Hand (Imperial College London), Margherita Harris (London School of Economics and Political Science), Christian Hennig (University of Bologna), Katrin Hohl (City University London), Daniël Lakens (Eindhoven University of Technology), Deborah Mayo (Virginia Tech), Richard Morey (Cardiff University), Stephen Senn (Edinburgh, Scotland), Jon Williamson (University of Kent) Continue reading →

Categories: Error Statistics | Leave a comment

All She Wrote (so far): Error Statistics Philosophy: 10 years on

Posted on September 3, 2021 by Mayo

Dear Reader: I began this blog 10 years ago (Sept. 3, 2011)! A double celebration is taking place at the Elbar Room–remotely for the first time due to Covid– both for the blog and the 3 year anniversary of the physical appearance of my book: Statistical Inference as Severe Testing: How to Get Beyond the Statistics Wars [SIST] (CUP, 2018). A special rush edition made an appearance on Sept 3, 2018 in time for the RSS meeting in Cardiff, where we had a session deconstructing the arguments against statistical significance tests (with Sir David Cox, Richard Morey and Aris Spanos). Join us between 7 and 8 pm in a drink of Elba Grease.

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Many of the discussions in the book were importantly influenced (corrected and improved) by reader’s comments on the blog over the years. I posted several excerpts and mementos from SIST here. I thank readers for their input. Readers might want to look up the topics in SIST on this blog to check out the comments, and see how ideas were developed, corrected and turned into “excursions” in SIST.

I recently invited readers to weigh in on the ASA Task Force on Statistical significance and Replication--any time through September–to be part of a joint guest post (or posts). All contributors will get a free copy of SIST. Continue reading →

Categories: 10 year memory lane, Statistical Inference as Severe Testing | Leave a comment

Should Bayesian Clinical Trialists Wear Error Statistical Hats? (i)

Posted on August 21, 2021 by Mayo

 

I. A principled disagreement

The other day I was in a practice (zoom) for a panel I’m in on how different approaches and philosophies (Frequentist, Bayesian, machine learning) might explain “why we disagree” when interpreting clinical trial data. The focus is radiation oncology.[1] An important point of disagreement between frequentist (error statisticians) and Bayesians concerns whether and if so, how, to modify inferences in the face of a variety of selection effects, multiple testing, and stopping for interim analysis. Such multiplicities directly alter the capabilities of methods to avoid erroneously interpreting data, so the frequentist error probabilities are altered. By contrast, if an account conditions on the observed data, error probabilities drop out, and we get principles such as the stopping rule principle. My presentation included a quote from Bayarri and J. Berger (2004): Continue reading →

Categories: multiple testing, statistical significance tests, strong likelihood principle | 26 Comments

Performance or Probativeness? E.S. Pearson’s Statistical Philosophy: Belated Birthday Wish

Posted on August 19, 2021 by Mayo

E.S. Pearson

This is a belated birthday post for E.S. Pearson (11 August 1895-12 June, 1980). It’s basically a post from 2012 which concerns an issue of interpretation (long-run performance vs probativeness) that’s badly confused these days. Yes, i know I’ve been neglecting this blog as of late, but this topic will appear in a new guise in a post I’m writing now, to appear tomorrow.

HAPPY BELATED BIRTHDAY EGON!

Are methods based on error probabilities of use mainly to supply procedures which will not err too frequently in some long run? (performance). Or is it the other way round: that the control of long run error properties are of crucial importance for probing the causes of the data at hand? (probativeness). I say no to the former and yes to the latter. This, I think, was also the view of Egon Sharpe (E.S.) Pearson.  Continue reading →

Categories: E.S. Pearson, Error Statistics | 2 Comments

Fair shares: sexual justice in patient recruitment in clinical trials

Posted on August 7, 2021 by Mayo

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Stephen Senn
Consultant Statistician
Edinburgh, Scotland

It is hard to argue against the proposition that approaches to clinical research should treat not only men but also women fairly, and of course this applies also to other ways one might subdivide patients. However, agreeing to such a principle is not the same as acting on it and when one comes to consider what in practice one might do, it is far from clear what the principle ought to be. In other words, the more one thinks about implementing such a principle the less obvious it becomes as to what it is.

Three possible rules

Continue reading →

Categories: evidence-based policy, PhilPharma, RCTs, S. Senn | 5 Comments

Invitation to discuss the ASA Task Force on Statistical Significance and Replication

Posted on July 30, 2021 by Mayo

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The latest salvo in the statistics wars comes in the form of the publication of The ASA Task Force on Statistical Significance and Replicability, appointed by past ASA president Karen Kafadar in November/December 2019. (In the ‘before times’!) Its members are:

Linda Young, (Co-Chair), Xuming He, (Co-Chair) Yoav Benjamini, Dick De Veaux, Bradley Efron, Scott Evans, Mark Glickman, Barry Graubard, Xiao-Li Meng, Vijay Nair, Nancy Reid, Stephen Stigler, Stephen Vardeman, Chris Wikle, Tommy Wright, Karen Kafadar, Ex-officio. (Kafadar 2020)

The full report of this Task Force is in the The Annals of Applied Statistics, and on my blogpost. It begins:

In 2019 the President of the American Statistical Association (ASA) established a task force to address concerns that a 2019 editorial in The American Statistician (an ASA journal) might be mistakenly interpreted as official ASA policy. (The 2019 editorial recommended eliminating the use of “p < 0.05” and “statistically significant” in statistical analysis.) This document is the statement of the task force… (Benjamini et al. 2021)

Continue reading →

Categories: 2016 ASA Statement on P-values, ASA Task Force on Significance and Replicability, JSM 2020, National Institute of Statistical Sciences (NISS), statistical significance tests | 3 Comments

Statistics and the Higgs Discovery: 9 yr Memory Lane

Posted on July 4, 2021 by Mayo

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I’m reblogging two of my Higgs posts at the 9th anniversary of the 2012 discovery. (The first was in this post.) The following, was originally “Higgs Analysis and Statistical Flukes: part 2” (from March, 2013).[1]

Some people say to me: “severe testing is fine for ‘sexy science’ like in high energy physics (HEP)”–as if their statistical inferences are radically different. But I maintain that this is the mode by which data are used in “uncertain” reasoning across the entire landscape of science and day-to-day learning, at least, when we’re trying to find things out [2] Even with high level theories, the particular problems of learning from data are tackled piecemeal, in local inferences that afford error control. Granted, this statistical philosophy differs importantly from those that view the task as assigning comparative (or absolute) degrees-of-support/belief/plausibility to propositions, models, or theories.

The Higgs discussion finds its way into Tour III in Excursion 3 of my Statistical Inference as Severe Testing: How to Get Beyond the Statistics Wars (2018, CUP). You can read it (in proof form) here, pp. 202-217. in a section with the provocative title:

3.8 The Probability Our Results Are Statistical Fluctuations: Higgs’ Discovery

Continue reading →

Categories: Higgs, highly probable vs highly probed, P-values | Leave a comment

Statisticians Rise Up To Defend (error statistical) Hypothesis Testing

Posted on June 28, 2021 by Mayo

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What is the message conveyed when the board of a professional association X appoints a Task Force intended to dispel the supposition that a position advanced by the Executive Director of association X does not reflect the views of association X on a topic that members of X disagree on? What it says to me is that there is a serious break-down of communication amongst the leadership and membership of that association. So while I’m extremely glad that the ASA appointed the Task Force on Statistical Significance and Replicability in 2019, I’m very sorry that the main reason it was needed was to address concerns that an editorial put forward by the ASA Executive Director (and 2 others) “might be mistakenly interpreted as official ASA policy”. The 2021 Statement of the Task Force (Benjamini et al. 2021) explains:

In 2019 the President of the American Statistical Association (ASA) established a task force to address concerns that a 2019 editorial in The American Statistician (an ASA journal) might be mistakenly interpreted as official ASA policy. (The 2019 editorial recommended eliminating the use of “p < 0.05” and “statistically significant” in statistical analysis.) This document is the statement of the task force…

Continue reading →

Categories: ASA Task Force on Significance and Replicability, Schachtman, significance tests | 10 Comments

June 24: “Have Covid-19 lockdowns led to an increase in domestic violence? Drawing inferences from police administrative data” (Katrin Hohl)

Posted on June 21, 2021 by Mayo

The tenth meeting of our Phil Stat Forum*:

The Statistics Wars
and Their Casualties

24 June 2021

TIME: 15:00-16:45 (London); 10:00-11:45 (New York, EST)

For information about the Phil Stat Wars forum and how to join, click on this link.

Katrin Hohl_copy

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“Have Covid-19 lockdowns led to an increase in domestic violence? Drawing inferences from police administrative data” 

Katrin Hohl Continue reading →

Categories: Error Statistics | Leave a comment

At long last! The ASA President’s Task Force Statement on Statistical Significance and Replicability

Posted on June 20, 2021 by Mayo

The ASA President’s Task Force Statement on Statistical Significance and Replicability has finally been published. It found a home in The Annals of Applied Statistics, after everyone else they looked to–including the ASA itself– refused to publish it.  For background see this post. I’ll comment on it in a later post. There is also an Editorial: Statistical Significance, P-Values, and Replicability by Karen Kafadar. Continue reading →

Categories: ASA Task Force on Significance and Replicability | 11 Comments

June 24: “Have Covid-19 lockdowns led to an increase in domestic violence? Drawing inferences from police administrative data” (Katrin Hohl)

Posted on June 20, 2021 by Mayo

The tenth meeting of our Phil Stat Forum*:

The Statistics Wars
and Their Casualties

24 June 2021

TIME: 15:00-16:45 (London); 10:00-11:45 (New York, EST)

For information about the Phil Stat Wars forum and how to join, click on this link.

Katrin Hohl_copy

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“Have Covid-19 lockdowns led to an increase in domestic violence? Drawing inferences from police administrative data” 

Katrin Hohl Continue reading →

Categories: Error Statistics | Leave a comment

The F.D.A.’s controversial ruling on an Alzheimer’s drug (letter from a reader)(ii)

Posted on June 8, 2021 by Mayo

I was watching Biogen’s stock (BIIB) climb over 100 points yesterday because its Alzheimer’s drug, aducanumab [brand name: Aduhelm], received surprising FDA approval.  I hadn’t been following the drug at all (it’s enough to try and track some Covid treatments/vaccines). I knew only that the FDA panel had unanimously recommended not to approve it last year, and the general sentiment was that it was heading for FDA rejection yesterday. After I received an email from Geoff Stuart[i] asking what I thought, I found out a bit more. He wrote: Continue reading →

Categories: PhilStat/Med, preregistration | 10 Comments

Bayesian philosophers vs Bayesian statisticians: Remarks on Jon Williamson

Posted on May 30, 2021 by Mayo

While I would agree that there are differences between Bayesian statisticians and Bayesian philosophers, those differences don’t line up with the ones drawn by Jon Williamson in his presentation to our Phil Stat Wars Forum (May 20 slides). I hope Bayesians (statisticians, or more generally, practitioners, and philosophers) will weigh in on this. 

Continue reading →
Categories: Phil Stat Forum, stat wars and their casualties | 11 Comments

Mayo Casualties of O-Bayesianism and Williamson response

Posted on May 24, 2021 by Mayo

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After Jon Williamson’s talk, Objective Bayesianism from a Philosophical Perspective, at the PhilStat forum on May 22, I raised some general “casualties” encountered by objective, non-subjective or default Bayesian accounts, not necessarily Williamson’s. I am pasting those remarks below, followed by some additional remarks and the video of his responses to my main kvetches. Continue reading →

Categories: frequentist/Bayesian, objective Bayesians, Phil Stat Forum | 4 Comments

May 20: “Objective Bayesianism from a Philosophical Perspective” (Jon Williamson)

Posted on May 14, 2021 by Mayo

The ninth meeting of our Phil Stat Forum*:

The Statistics Wars
and Their Casualties

20 May 2021

TIME: 15:00-16:45 (London); 10:00-11:45 (New York, EST)

For information about the Phil Stat Wars forum and how to join, click on this link.

“Objective Bayesianism from a philosophical perspective” 

Jon Williamson Continue reading →

Categories: Error Statistics | Tags: | Leave a comment

Tom Sterkenburg Reviews Mayo’s “Statistical Inference as Severe Testing: How to Get Beyond the Statistics Wars” (2018, CUP)

Posted on May 4, 2021 by Mayo

T. Sterkenburg

Tom Sterkenburg, PhD
Postdoctoral Fellow
Munich Center for Mathematical Philosophy
LMU Munich
Munich, German

Deborah G. Mayo: Statistical Inference as Severe Testing: How to Get Beyond the Statistics Wars

The foundations of statistics is not a land of peace and quiet. “Tribal warfare” is perhaps putting it too strong, but it is the case that for decades now various camps and subcamps have been exchanging heated arguments about the right statistical methodology. That these skirmishes are not just an academic exercise is clear from the widespread use of statistical methods, and contemporary challenges that cry for more secure foundations: the rise of big data, the replication crisis.

Continue reading →

Categories: SIST, Statistical Inference as Severe Testing–Review, Tom Sterkenburg | 9 Comments

CUNY zoom talk on Wednesday: Evidence as Passing a Severe Test

Posted on April 26, 2021 by Mayo

If interested, write to me for the zoom link (error@vt.edu).

Categories: Announcement | Leave a comment

April 22 “How an information metric could bring truce to the statistics wars” (Daniele Fanelli)

Posted on April 19, 2021 by Mayo

The eighth meeting of our Phil Stat Forum*:

The Statistics Wars
and Their Casualties

22 April 2021

TIME: 15:00-16:45 (London); 10:00-11:45 (New York, EST)

For information about the Phil Stat Wars forum and how to join, click on this link.

“How an information metric could bring truce to the statistics wars“

Daniele Fanelli Continue reading →

Categories: Phil Stat Forum, replication crisis, stat wars and their casualties | 1 Comment

A. Spanos: Jerzy Neyman and his Enduring Legacy (guest post)

Posted on April 17, 2021 by Mayo

I am reblogging a guest post that Aris Spanos wrote for this blog on Neyman’s birthday some years ago.   

A. Spanos

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 and his theory of Confidence Intervals. (This article was first posted here.) Continue reading →

Categories: Neyman, Spanos | Leave a comment

Happy Birthday Neyman: What was Neyman opposing when he opposed the ‘Inferential’ Probabilists?

Posted on April 16, 2021 by Mayo

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Today is Jerzy Neyman’s birthday (April 16, 1894 – August 5, 1981). I’m posting a link to a quirky paper of his that explains one of the most misunderstood of his positions–what he was opposed to in opposing the “inferential theory”. The paper is Neyman, J. (1962), ‘Two Breakthroughs in the Theory of Statistical Decision Making‘ [i] It’s chock full of ideas and arguments. “In the present paper” he tells us, “the term ‘inferential theory’…will be used to describe the attempts to solve the Bayes’ problem with a reference to confidence, beliefs, etc., through some supplementation …either a substitute a priori distribution [exemplified by the so called principle of insufficient reason] or a new measure of uncertainty” such as Fisher’s fiducial probability. It arises on p. 391 of Excursion 5 Tour III of Statistical Inference as Severe Testing: How to Get Beyond the Statistics Wars (2018, CUP). Here’s a link to the proofs of that entire tour. If you hear Neyman rejecting “inferential accounts” you have to understand it in this very specific way: he’s rejecting “new measures of confidence or diffidence”. Here he alludes to them as “easy ways out”. He is not rejecting statistical inference in favor of behavioral performance as typically thought. Neyman always distinguished his error statistical performance conception from Bayesian and Fiducial probabilisms [ii]. The surprising twist here is semantical and the culprit is none other than…Allan Birnbaum. Yet Birnbaum gets short shrift, and no mention is made of our favorite “breakthrough” (or did I miss it?). You can find quite a lot on this blog searching Birnbaum. Continue reading →

Categories: Bayesian/frequentist, Error Statistics, Neyman | 3 Comments

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