T-Tests – A Matched Pair Made in Heaven: Crash Course Statistics #27

Today we’re going to walk through a couple of statistical approaches to answer the question: “Is coffee from the local cafe, Caf-fiend, better than that other cafe, The Blend Den?” We’ll build a two-sample t-test which will tell us how many standard errors away from the mean our observed difference is in our tasting experiment, and then we’ll introduce matched pair t-tests which allow us to remove variation in the experiment. All of these approaches rely on the test statistic framework we introduced in the last episode.