Andrew Gelman

What has happened down here is the winds have changed

A Cornell professor’s trick for getting 1700 peer reviewed publications

The 1980 Math Olympiad Program: Where are they now?

“The Book of Why” by Pearl and Mackenzie

Judea Pearl and Dana Mackenzie sent me a copy of their new book, “The book of why: The new science of cause and effect.”

You need 16 times the sample size to estimate an interaction than a main effect

In causal inference, it is often important to study varying treatment effects: for example, a treatment could be more effective for men than for women, or for healthy than for unhealthy patients. Suppose a study is designed to have 80% power to detect a main effect at a 95% confidence level. Further suppose that…

A researcher's response to people pointing out 150 errors in four of his papers

There are a bunch of things about this story that just don’t make a lot of sense to me.

Randall Munroe Responds to Gelman's Criticism of XKCD

Why I decided not to enter the $100k global warming time-series challenge

Interesting applied project for your students , or as a warning for decisions under uncertainty / statistical significance. Real money on the line so the length of time and number of entries required to get a winner may be an interesting dataset after this is all done.