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…

RANDOM TIDS & BITS- Thu 3/20/24- – WAXX on The Sports Illustrated curse and regression to the meanNovember 6, 2025
[…] Illustrated” once determined that their cover is a JINX 37% of the time. So about two out of every five…
Uncle Mike on Class 71: Never Trust ‘Research Shows’ Headlines: We Bring Cause To DataNovember 6, 2025
Homework discussion re Utts: It may be useful to note that syncretic hermeticism begins with the Egyptian god Thoth who…
Hagfish Bagpipe on Diversity Patrol Scanning Citations For VictimsNovember 5, 2025
"Consider this article one man addressing it." And doing such a fine job that none of your adversaries dare address…
Cary D Cotterman on Diversity Patrol Scanning Citations For VictimsNovember 5, 2025
When I was writing papers and technical reports, I cited the papers from which I got the information I needed.…
Lab Rat on Diversity Patrol Scanning Citations For VictimsNovember 5, 2025
Most of the time papers only have the first initial in the citation author list - how the heck am…