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…

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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,…

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…

spaceranger on Antichrist, by Saint Robert BellarmineNovember 27, 2025
The online world is our graven image and celebrity culture our false idol.
Brian (bulaoren) on Old Lodge Skins’ Prayer Of ThanksgivingNovember 27, 2025
One thing I am always grateful for (well, 4 days a week) is being able to enjoy your posts. Thank…
Uncle Mike on Old Lodge Skins’ Prayer Of ThanksgivingNovember 27, 2025
Gratitude (n.) mid-15c., "good will," from Latin gratus "thankful, pleasing, agreeable" related to Latin gratis "favor, mercy, virtue" (source of…
Tracy Platt on The Apples In A Sack Paradox: Solve It Or You Get No Pie TomorrowNovember 26, 2025
I think Rudolf comes closest except for this being a garbage problem. My guess is we will see similar arguments…
John Pate on The Apples In A Sack Paradox: Solve It Or You Get No Pie TomorrowNovember 26, 2025
Mr Harrier is on the right lines: see previous blog where I was berating sundry for worrying about using probability…