William M. Briggs

An Ensemble Of Models Is Completely Meaningful, Statistically: Update 2

The Answer to Senn will continue on Monday. Look for my Finger Lakes winery tour tasting notes Sunday! Several readers asked me to comment on an ensemble climate forecasting post…

Philosophy Statistics

All Probability Is Conditional: An Answer To Senn; Part IV

Read Part III. Still with me? Hope so, because we're only on the second page of Senn's article (but don't fret; we'll be skipping most of it). Review: in logical-probability…

Philosophy Statistics

Probability Isn’t “Fair”: An Answer To Senn; Part III

A quick reminder that we're trying to unpack the meaning of the "is fair" in the proposition "This die is fair," and trying to deduce the probability this proposition is…

Philosophy Statistics

There Is Only One Kind Of Probability: An Answer To Senn; Part II

Read Part I. Some of this material is explained in detail in this series. Just after the introduction, Senn starts his argument by claiming an "important distinction between two types…

Philosophy Statistics

Bayes Is More Than Probably Right: An Answer To Senn; Part I

Stephen Senn very kindly answered a post I wrote on p-values (Unsignificant Statistics: Or Die P-Value, Die Die Die) by sending me his "You May Believe You Are a Bayesian…

Statistics

Cornell Teaching Sojourn: Probability, Stats, & R

Time for the annual migration to Ithaca via a well accoutered golden coach (complete with undergraduates feeding professors grapes grown at Cornell's orchards). There I will linger for two weeks,…

Philosophy Statistics

Tobacco Ads Could Lead To Cancer Cure

Today's headline is true. True means that which is certain, without the possibility of error; that which is not false; that which accords with reality. It means that which is…

Statistics

Unsignificant Statistics: Or Die P-Value, Die Die Die

Must...resist...quoting... from Stephen Ziliak's gorgeous invective "Unsignificant Statistics" (where I stole today's title) in the Financial Post. Well, just a little (all emphasis mine and joyfully placed): Statistical significance is…

Alain Petit on Antichrist, by Saint Robert Bellarmine, ReviewedApril 16, 2026
https://m.youtube.com/watch?v=CNbmoVdirxw&pp=0gcJCdMKAYcqIYzv
Klara Castagna on Trump’s Last Stand: Mea Culpa, Redux — Guest Post by Ianto WattApril 16, 2026
Ianto, I luv ya man, I bought and read your book ‘The Barbarian Bible’ - everyone should buy it and…
MikeW on How A Miracle Turns MundaneApril 16, 2026
There are many ways to reconcile alleged contradictions in the Bible, including the staff issue (which is not a particularly…
C-Marie on How A Miracle Turns MundaneApril 15, 2026
"Memories flag, you see,....." , BUT the Holy Spirit does not flag at all , and He It was Who…
Brian (bulaoren) on How A Miracle Turns MundaneApril 15, 2026
Should these (percieved) inconsistencies negate the whole body of teaching? I once knew a couple who were profoundly opposed to…

William M. Briggs

Class 86: Calibration & Conformal Prediction: Theory

How A Miracle Turns Mundane

Contest Winner Announced!

Trump’s Last Stand: Mea Culpa, Redux — Guest Post by Ianto Watt

Class 85: Proper Scores of Model Goodness

Proof!

Justice Ketanji Roars

Iran Has Caught Covid: A Reason For The War

Class 84: Most Important Measure of Model Goodness

There Is No Solution To Crashing Fertility: Good Times Made Soft Men

Did The Pope Really Say Health Is A “Right”?

All Models Only Say What They Are Told To Say, And AI Is A Model

It’s The End Of The World Again

Belgian Judge Wants To Arrest Little Nate Cofnast Because Cofnast Says Smart People Are Smarter Than Dumb People

Class 83: Why Were Paul Ehrlich’s Predictions So Good (and so Bad)?

The Great Effeminization of the Academy

The Only Metric That Matters: Or, Pinker’s Folly

Lancet Discovers Public Health Is Politics

Class 82: Be More Uncertain (About Models)

On Not Reading

The Great Smoothing: Another Reason Not To Fear (or trust) AI

Class 86: Calibration & Conformal Prediction: Theory

How A Miracle Turns Mundane

An Ensemble Of Models Is Completely Meaningful, Statistically: Update 2

All Probability Is Conditional: An Answer To Senn; Part IV

Probability Isn’t “Fair”: An Answer To Senn; Part III

There Is Only One Kind Of Probability: An Answer To Senn; Part II

Bayes Is More Than Probably Right: An Answer To Senn; Part I

Cornell Teaching Sojourn: Probability, Stats, & R

Tobacco Ads Could Lead To Cancer Cure

Unsignificant Statistics: Or Die P-Value, Die Die Die

There Is No Culture Without Inequality: Stove 1

Impose Your Beliefs Before They Impose Theirs

Telekinesis: Ideas In Our Reenchantment & Rectification

The Physics Of Blessings: Ideas In Our Reenchantment & Rectification