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…

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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…

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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…

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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…

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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…

Philip Rogan on Irrational Rationalists: Effective Altruists & The Planet of the AntsSeptember 29, 2026
Effective Altruism is something else I've never hard of but apparently has been infecting academic circles for decades. I took…
John M on Irrational Rationalists: Effective Altruists & The Planet of the AntsSeptember 29, 2026
Thanks for reminding me of that classic Klingon joke!
Rob Potter on Irrational Rationalists: Effective Altruists & The Planet of the AntsSeptember 29, 2026
Asimov's robot stories are the best example that an artificial intelligence is not intelligence. They were a fabulous way for…
John Pate on Irrational Rationalists: Effective Altruists & The Planet of the AntsSeptember 28, 2026
We should all re-read our Ted Kaczynski materials. A man ahead of his time.
Brian (bulaoren) on Irrational Rationalists: Effective Altruists & The Planet of the AntsSeptember 28, 2026
While in university, I took a class called "Symbolic Logic". Logic was then taught through the Philosophy department, which was…