Class – Page 7 – William M. Briggs

Free Probability-Statistics Class: Predictive Case Study 1, Part XI

Review! We left off with comparing the standard, out-of-the-box linear regression with our multinomial predictive observable model. The great weaknesses of the regression were probability leakage (giving positive probability to…

Class Statistics

Free Probability-Statistics Class: Predictive Case Study 1, Part X

Review! Last time we created four models of CGPA. Which is correct? They all are. Why? I should ask as a homework question, but I'll remind us here. Since all…

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Free Probability-Statistics Class: Predictive Case Study 1, Part IX

Review! Last time we successfully computed our model (8): (8) Pr(CGPA = i | guesses of new measures, grading rules, old obs, model), where i = 0,...,5. The model…

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Free Data Science Class: Predictive Case Study 1, Part VIII

Review! We're continuing with the CGPA example. The data is on line, and of unknown origin, but good enough to use as an example. We will build a correlational model,…

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Free Data Science Class: Predictive Case Study 1, Part VII

Review! This is our last week of theory. Next week the practical side begins in earnest. However much fun that will be, and it will be a jolly time, this…

Class Statistics

Cliodynamics And The Lack Of A Hari Seldon

There will be no Hari Seldon. But there will be prophets. If there is no Seldon, there will be no psychohistory, the fictional astonishingly accurate mathematical science predicting gross human…

Class Statistics

Free Data Science Class: Predictive Case Study 1, Part VI

Review! This class is neither frequentist nor Bayesian nor machine learning in theory. It is pure probability, and unlike any other class available. And for the right price! Last time…

Class Statistics

What Is The Probability Of COVFEFE?

From a tweet from Taleb, who informs us the following question is part of the Indian Statistical Institute examination. (5) Mr.Trump decides to post a random message on Facebook and…

dadgervais on Richard Dawkins, The Big Muscles Fallacy & AI PachinkoMay 8, 2026
As I (computer engineer, retired) have always maintained: people who believe in mechanical inteligence suffer from "Clever Hans Syndrome". A…
NLR on Richard Dawkins, The Big Muscles Fallacy & AI PachinkoMay 7, 2026
It appears that Dawkins does not have a well thought out philosophy of consciousness and so he has psyched himself…
jgh on The Red-Blue Button Dilemma & Its Surprising AnswerMay 7, 2026
There's an episode of Golden Balls where one contentant understood how The Prisoners' Dilemma worked and succcessfully tricked his opponent…
Johnno on How Experts Use “Calamities” to Find Official Victims & Gain PowerMay 6, 2026
Hence we descriptively say in plural... a "calamity of victims." Or a "catastrophe of Expurts." Or an "academy of failures."…
Brian (bulaoren) on How Experts Use “Calamities” to Find Official Victims & Gain PowerMay 6, 2026
So, three circumlocutors walk into a bar...