A Gentle Introduction to ANOVA – The Problem of Probability Pyramiding (12-1)

Why do we need ANOVA? Can’t we just compare multiple groups with lots of little t tests? Unfortunately, when we use multiple t test, the error rate skyrockets. The effect of probability pyramiding kicks in and we begin making Type I errors with no way of telling which findings are wrong. The ANOVA allows us to compare means from 3 or more groups by first analyzing the variance between and within groups, then doing a follow up (post hoc) test. This video teaches the following concepts and techniques: Introduction to the ANOVA concept Link to a Google Drive folder with all of the files that I use in the videos including ANOVA datasets. As I add new files, they will appear here, as well. https://drive.google.com/drive/folder... Table of Contents: 00:08 - Statistics for the Flipped Classroom 02:13 - Mo’ Measures, Mo’ Problems 02:32 - Why Not Use Lots of t Tests? 03:10 - Lottery Analogy 04:29 - Probability Pyramiding 05:25 - Solution? …ANOVA ! 06:56 - One Way ANOVA