Table 1.
ANOVA for response surface quadratic model.
| Source | Sum of squares | df | Mean square | F value | P value | |
|---|---|---|---|---|---|---|
| Prob > F | ||||||
| Model | 0.178603 | 3 | 0.059534 | 10.7657 | 0.0219 | Significant |
| A: inoculum size | 0.000182 | 1 | 0.000182 | 0.00634 | 0.9388 | |
| B: indole concentration | 0.033406 | 1 | 0.033406 | 1.164996 | 0.3162 | |
| AB | 0.000156 | 1 | 0.000156 | 0.005449 | 0.9432 | |
| A 2 | 0.000636 | 1 | 0.000636 | 0.022184 | 0.8858 | |
| B 2 | 0.157436 | 1 | 0.157436 | 5.490418 | 0.0516 | |
| Residual | 0.200723 | 7 | 0.028675 | |||
| Lack of fit | 0.197208 | 5 | 0.039442 | 1.375483 | 0.3378 | Not significant |
R 2: 0.93, Adj. R 2: 0.85, Pred. R 2: 0.97, Adqt. Prec.: 15.