Table 6 ANOVA for the response surface quadratic model for α-L-arabinofuranosidase production
Source | Degree of freedom | Sequential sums of squares | Adjusted sums of squares | Adjusted mean squares | F value | P value |
|---|---|---|---|---|---|---|
Regression | 27 | 464.93 | 464.93 | 17.220 | 3.12 | 0.002 |
Linear | 6 | 193.24 | 193.24 | 32.207 | 5.84 | 0.001 |
Square | 6 | 123.23 | 123.23 | 20.539 | 3.73 | 0.008 |
Interaction | 15 | 148.46 | 148.46 | 9.897 | 1.80 | 0.092 |
Residual error | 26 | 143.28 | 143.28 | 5.511 | ||
Lack-of-fit | 21 | 127.27 | 127.27 | 6.061 | 1.89 | 0.249 |
Pure error | 5 | 16.00 | 16.00 | 3.201 | ||
Total | 53 | 608.21 |