Table 3: Analysis of variance of the fitted quadratic regression model (2).

SourceSS*df*MS* value valueRemarks

Model 1412152.9782.14<0.0001Significant
724.411724.414.900.0428Significant
2.9612.960.0200.8894Not significant
200.131200.131.350.2630Not significant
102.721102.720.690.4178Not significant
17759.56117759.56120.03<0.0001Significant
13001.70113001.7087.87<0.0001Significant
7818.9817818.9852.85<0.0001Significant
12188.16112188.1682.38<0.0001Significant
14769.54114769.5499.82<0.0001Significant
4298.1114298.1129.05<0.0001Significant
0.8310.83 0.9414Not significant
22206.70122206.70150.09<0.0001Significant
5034.3215034.3234.03<0.0001Significant
11447.22111447.2277.37<0.0001Significant
Residual2219.3615147.96
Lack of Fit2198.7110219.8753.240.0002Significant
Pure Error20.6554.13

SS: sum of squares; df: degree of freedom; MS: mean square.