•2.7 Analysis of Variance (ANOVA)•We want to develop an approach for assessing the strength of thelinear regression relationship.•Going back to the R output you will notice that there is an F statisticprinted out. This F Statistic comes from an ANOVA table and looks torelate the known and unknown variability in our regression model.•In general we have 3 components of variability:Total variability = Known variability + Unknown variabilityVariability present inoriginal datavariability explained bythe regression modelvariability that remainsunexplained