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…

Brian (bulaoren) on Science Is Becoming FeelingsNovember 9, 2026
@Susan Powers I would urge you not to go Q.E.D.-ing prematurely. As Justice Ketanji Brown Jackson might tell you; The…
Susan Powers on Science Is Becoming FeelingsNovember 9, 2026
Thought I would demonstrate my laser sharp perspective: the authors are all women.
Briggs on Class 95: Answering P-Value Good Uses ChallengesNovember 8, 2026
Brett, Yes, I accept this correction. You're quite right. I let my enthusiasm get the better of me. I'll change.
Brett Watson on Class 95: Answering P-Value Good Uses ChallengesNovember 8, 2026
"The conclusion given these premises (a phrase which I ought to write in ten foot high letters) is FALSE." No.…
Francois Stallbom on Book Update: Launch DateNovember 7, 2026
Cant wait! Just finished reading book one for the second time with great enjoyment.