Source Sum of Squares df Mean Square F Value P Value Prob<F
Model 2050.95 5 410.19 69.71 <0.0001 significant.
A-pH 441.30 1 441.30 74.99 0.0001
B-substrate 41.40 1 41.40 7.04 0.0328
AB 1.10 1 1.10 0.19 0.6782
A2 1442.50 1 1442.50 245.13 <0.0001
B2 256.73 1 256.73 43.63 0.0003
Residual 41.19 7 5.88  
Lack of Fit 41.19 3 13.73  
Pure Error 0.000 4 0.000  
Core Total 2092.14 12    
Table 8: Analysis of variance of quadratic mode (Partial sum of squares Type III).