statistics

Will Briggs blows the whistle on p-values and statistical significance (what’s with 0.05 anyway?).  Sorry, Will, no one will listen. Tip from John Cook at the Endeavour. Read more

John Cook explains the Lincoln Index, which is the software engineer’s name for the Petersen capture-recapture estimator (also called the Lincoln-Petersen model). Read more

Here’s one from the Research 2000 debacle–a nice example of variance reduction through stratified sampling. Read more

Check out this online database of income and expenses reported to the NCAA. Tip from Matt Yglesias by way of  Phi Beta Cons. Read more

…and we’re still wrestling with p-values.  I’ve gotta go see what C.R. Rao prefers as an alternative (in the comments). Read more

I’ve been teaching this for years, but never came up with such an excellent write-up. Sweet! Read more

Want to become a multi-level modeling wizard?  Take this course from the University of Bristol. Tip from Andrew Gelman. Read more

The Bristol Stool Chart is a really disgusting example of an ordinal variable. Read more

Here’s a particularly egregious example of statistical significance vs. practical significance.  We always seem to overlook that, don’t we? XKCD reminded us of this back during the financial meltdown and attendant scoldings: Read more

This article takes you for a tour. Tip from Nathan at Flowing Data. Update (31 May).  Andrew Gelman was not impressed. Read more