1. The problem statement, all variables and given/known data I understand how the two factor analysis of variance works but adding a third level is giving me some trouble. The model I am trying to analyze has three factors with 2,3, and 4 levels respectively. Can anyone give me an example of a three-factor analysis of variance calculation? 2. Relevant equations SS_T = SS_A + SS_B + SS_C + SS_AB + SS_AC + SS_CB + SS_ABC + SS_E 3. The attempt at a solution My main problem concerns how to calculate the SS_A term now that there is an extra level? I would really appreciate just an example of three factor analysis.