7.1 Independent groups, for ITNS

Independent groups design, pen-laptop example. ESCI intro chapters 3-8, Data two. Difference between group means and CI on the difference. Figure with difference axis. Homogeneity of variance, pooled standard deviation, Welch-Satterthwaite. This is a video to go with the book: Introduction to The New Statistics: Estimation, Open Science, and Beyond (Routledge 2017) by Geoff Cumming & Robert Calin-Jageman. See: www.thenewstatistics.com