Today our goal is to cover hypothesis testing and the basic z-test, as these are fundamental to understanding how the t-test works. We’ll return to the t-test soon — with real data.

Beware a study that collects data on a zillion different variables, and then looks for evidence of relationships via hypothesis testing. (This is sometimes refered to as “shotgun statistics.”) A ...

The Brookbush Institute continues to enhance education with new courses, a modern glossary, an AI Tutor, and a client pr ...

Alpha risk is the risk in a statistical test of rejecting a null hypothesis when it is actually true.

Fisher’s exact test is a statistical hypothesis test used to assess the association between two binary variables in a contingency table and is particularly useful when working with small sized samples ...

The Annals of Statistics, Vol. 37, No. 2 (Apr., 2009), pp. 1040-1057 (18 pages) We consider symmetric hypothesis testing in quantum statistics, where the hypotheses are density operators on a ...

Despite their wide use in scientific journals such as The Journal of Wildlife Management, statistical hypothesis tests add very little value to the products of research. Indeed, they frequently ...