A few annotations to annon’s comparison of ANOVA and Regression:
The Eta squared in an ANOVA table is the same as the R-squared in a regression analysis. The Eta/R-squared gives you the “practical significance” as a proportion of explained variance (Factor sum of squared/Total sum of squared).
The F-test in ANOVA tells you the stat…[Read more]
ANOVA and Regression are all part of the general linear model. ANOVA was “invented” in the 1920s as a computationally simpler formula for regression. An ANOVA can be run as a regression with dummy variables.