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. 2018 Oct 19;5(4):89. doi: 10.3390/bioengineering5040089

Table 9.

An example of Analysis of Variance (ANOVA) for Response Surface Methodology fitted to a second-order polynomial equation. The table depicts R-squared (R2), Adjusted R-squared (Adj-R2), Predicted R-squared (Pred-R2), degree of freedom (DF), adjusted sum of square (Adj SS), adjusted mean square (Adj MS), F-value and p-value of the model.

Source DF Adj SS Adj MS F-Value p-Value
Model 11 40.4149 3.67408 1255.77 0.0001
Linear 4 3.1531 0.78828 269.43 0.0001
Square 4 35.3209 8.83022 3018.09 0.0001
Interaction 3 1.9409 0.64697 221.13 0.0001
Residues 40 0.117 0.00293
Lack-of-fit 13 0.00369 0.00284 0.96 0.515
Pure error 27 0.0802 0.00297
Total 51 40.532
R2= 99.71%, Adj-R2 = 99.63%, Pred-R2 = 99.48%