Sum of squares Degree of freedom Mean square F-value P-value
Model 2014.93 14 143.92 7.8 0.000a
Linear 1813.05 4 453.26 24.55 0.000a
Square 73.85 4 18.46 1 0.436
Interaction 128.02 6 21.34 1.16 0.376
Residual error 295.37 16 18.46    
Lack of Fit 208.83 10 20.88 1.45 0.337
Pure error 86.53 6 14.42    
Total 2310.3 30      
Table 6: ANOVA for CCD design.