Flipped!

This headline popped up in my newsfeed this morning: Boys will be boys: Data error prompts U-turn on study of sex differences in school (Retraction Watch, 2017) The article is about a peer-reviewed article on self-regulation of study habits that was published earlier...

Paired samples are not always obvious

Although we often think of paired samples as being the same person (thing) in a “before” and “after” treatment setting, there are some other important types of paired samples. One kind are “natural” pairings, such as spouses, siblings, and especially twins. This type...

PHStat

I know a number of you are using Excel to do the number crunching for this course. Some of your learning processes involve working through the step-by-step equations using some or many of Excel’s built-in stats functions along with some formulas. This is a good...