Table 8 Regression coefficient estimates and variance inflation factors for quadratic model of pectinase activity of A. Fumigatus BT-4
Factor | Coefficient estimate | df | Standard error | 95% CI Low | 95% CI High | VIF |
|---|---|---|---|---|---|---|
Intercept | 22.37 | 1 | 0.8405 | 20.38 | 24.36 | Â |
A-temperature | 0.3294 | 1 | 0.4247 | -0.6749 | 1.33 | 1.05 |
B-pH | 4.74 | 1 | 0.4612 | 3.65 | 5.83 | 1.11 |
C-inoculum age | 1.75 | 1 | 0.4830 | 0.6109 | 2.90 | 1.12 |
AB | 0.5765 | 1 | 0.5718 | -0.7755 | 1.93 | 1.09 |
AC | -1.74 | 1 | 0.6258 | -3.22 | -0.2590 | 1.13 |
BC | -0.4889 | 1 | 0.6258 | -1.97 | 0.9910 | 1.13 |
A² | -2.28 | 1 | 0.4300 | -3.29 | -1.26 | 1.11 |
B² | -4.26 | 1 | 0.5193 | -5.48 | -3.03 | 1.15 |
C² | -1.91 | 1 | 0.5143 | -3.13 | -0.6971 | 1.17 |