Table 9: ANOVA quadratic model for copper.

SourceSum of squaresDOFMean square value value

Model7763.509862.61155.08<0.0001Significant
A-CD4608.0014608.00828.40<0.0001
B-solvent544.501544.5097.89<0.0001
C-time1922.0011922.00345.53<0.0001
AB1.000011.00000.17980.6827
AC225.001225.0040.450.0002
BC25.00125.004.490.0668
A2184.361184.3633.140.0004
B2279.271279.2750.210.0001
C29.8219.821.770.2206
Residual44.5085.56
Lack of fit44.50314.83
Pure error0.000050.0000
Total7808.0017