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Table 3 Analysis of variance of response surface quadratic model for cellulase production

From: Carboxymethyl cellulase production optimization from newly isolated thermophilic Bacillus subtilis K-18 for saccharification using response surface methodology

Effect SS df MS F P
Model 11.02376 14 0.787412 8.781174 0.000460
X1 0.495223 1 0.495223 5.522699 0.038484
X 21 0.079875 1 0.079875 0.890763 0.365539
X2 0.000630 1 0.000630 0.007027 0.934699
X 22 0.066383 1 0.066383 0.740296 0.407928
X3 0.227668 1 0.227668 2.538943 0.139376
X 23 0.061811 1 0.061811 0.689311 0.424052
X4 0.106695 1 0.106695 1.189860 0.298675
X 24 0.004848 1 0.004848 0.054070 0.820397
X1*X2 0.016194 1 0.016194 0.180592 0.679059
X1*X3 0.006181 1 0.006181 0.068927 0.797758
X2*X3 0.251767 1 0.251767 2.807690 0.121973
X1*X4 0.302941 1 0.302941 3.378387 0.093191
X2*X4 0.003314 1 0.003314 0.036958 0.851053
X3*X4 0.351152 1 0.351152 3.916025 0.073408
Error 0.986375 11 0.089670