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Table 3 Analysis of variance (ANOVA) for β-galactosidase activity

From: Optimization and partial purification of beta-galactosidase production by Aspergillus niger isolated from Brazilian soils using soybean residue

Source F value p-value > F
Model 18.21 0.018
Speed agitation 1.92 0.259
Temperature 32.17 0.010
pH 60.04 0.004
X 1 X 2 5.83 0.094
X 1 X 3 3.22 0.170
X 2 X 3 6.07 0.090
Lack of fit 9.110 0.094
  1. The model including as independent variables (X1) agitation, (X2) temperature and (X3) pH