Do you teach introductory statistics or data science? Need some help planning your fall class? I apply the 10 Principles of Burning Man in the design and conduct of all my undergraduate […]

The purpose of this post is to demonstrate change point analysis by stepping through an example of change point analysis in R presented in Rizzo’s excellent, comprehensive, and very mathy book, Statistical […]

What is a data scientist? What makes for a good (or great!) data scientist? It’s been challenging enough to determine what a data scientist really is (several people have proposed ways to […]

So yesterday, I set up an #AmazonGiveaway for my new R book at https://giveaway.amazon.com/p/ea32d421d8d7672d — but I had my 10 year old input the number that will determine every nth person who gets the printed […]

(Note: The Amazon site may not be fully functional until mid-week as they complete their setup.) As of today, I now have a NEW FAVORITE introductory statistics textbook… the one I’ve always dreamed […]

The Central Limit Theorem (CLT), and the concept of the sampling distribution, are critical for understanding why statistical inference works. There are at least a handful of problems that require you to […]

For quite a while, I’ve been confused by the behavior of the prop.test function in R: 1) the p-values always seem to be slightly off, and 2) the confidence intervals never seem to be […]

Just recently, the editors of the academic journal Basic and Applied Social Psychology have decided to ban p-values: that’s right, the nexus for inferential decision making… gone! This has created quite a […]

In my simulation classes, we talk about how to generate random numbers. One of the techniques we talk about is the Linear Congruential Generator (LCG). Starting with a seed, the LCG produces […]

Contingency tables provide a way to display the frequencies and relative frequencies of observations, which are classified according to two categorical variables. The elements of one category are displayed across the columns; the […]