Table 5. Analysis of variance for the balanced highest-order model

Model terms: X1, X2; X12, X22; X1X2; X1X22, X12X2; X12X22
Source Degrees of freedom Sum of squares Mean square F-value p-value
Model 8 87.72 10.97 112.86 0.0081
Error 2 0.18 0.09
Total 10 87.90
Root MSE=0.30 r-square=0.9980 Adjusted r-square=0.9898
MSE, mean square error.