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…

Class Statistics

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…

Class Statistics

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,…

Class Statistics

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…

Rudolph Harrier on The Great Smoothing: Another Reason Not To Fear (or trust) AIMarch 10, 2026
I've started thinking of this as the "juice loosener problem" (after the Simpsons bit where Dr. Nick hawks an orange…
Cary D Cotterman on The Great Smoothing: Another Reason Not To Fear (or trust) AIMarch 10, 2026
After spending years in school doing my own writing, then decades in my profession busting my ass to write somewhere…
Uncle Mike on The Great Smoothing: Another Reason Not To Fear (or trust) AIMarch 10, 2026
AI isn't the entity smoothing the data. The alleged decline in Arctic sea ice was a key assertion in Algore's…
JH on A Synchronicity Or Coincidence? What Is Behind Curious Events?March 10, 2026
The definition of cause can vary, and each incident may have its causes or contributing factors. I see coincidences as…
JH on The Great Smoothing: Another Reason Not To Fear (or trust) AIMarch 10, 2026
AI can be ‘gullible’ because it takes all the information fed into its optimization or backpropagation system. In many tasks,…