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Current trends never continue

or why, despite shootings in Tuscon, terrorism by the Taliban, the expanding concentration of wealth in the hands of the richest 1% of Americans, the implosion of Detroit and every movie Michael Moore ever made, I still remain hopeful. I was depressed this week, until I remembered The Black Swan and Volcano. The otherwise forgettable…

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Logistic regression never screws up when you want it to

All my programs are working today and I am sad. Fortunately for everyone else, but unfortunately for me today, SAS has increasingly automated or semi-automated fixing those errors. It’s unfortunate for me because I wanted to talk about errors and how to fix these. I could create a simulation dataset but I hate doing that….

People who annoy me: Mathematicians who pretend to be statisticians

The first course I ever took in statistics was in the math department, over thirty years ago, and Dr. Spitznagel, at Washington University in St. Louis taught me a good deal despite my best efforts, assisted by Fraternity Row, to major in partying (please don’t tell my mom). So, math people, thanks for that. HOWEVER…

Categorical variables don’t make no never mind? Not!

Back in 1976, Howard Wainer published an article in Psychological Bulletin entitled, “Estimating linear coefficients in linear models: It don’t make no never mind.” Since I read this sometime in graduate school and I took my last statistics course in 1989, spending the rest of the time writing my dissertation, I believe I should win…

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Advice on marriage, Euclid & logistic regression

My friend, Gokor Chivichyan, a mixed martial arts instructor, once gave this questionable advice to his students, “Women usually just say they’re fat to get attention. So, me, I agree with them. If she says she’s fat, I say, yes, you fat but we like you anyway. If she’s really fat, though, you just have…