The general form of the complete and reduced model is: E(y) = o + x1 + 2 x2 + 3 x1 x2 + 4 x + E(y) = Bo + B x1 + 2 x2 + 3 x1 x2 5 x complete model reduced model The prediction regression equation for the complete and reduced model is: = + x1 + B2 x2 + B3 x1 x2 + B 4 x + B5 x 33 complete model = o + x1 + B2 x2 + B3 x1 x2 reduced model A anova: 2 6 Res.Df RSS Df Sum of Sq F Pr(>F) 93 31.36076 NA NA NA 95 42.12107 -2 -10.76031 15.95479 1.103452e-06