Table 6.
ANOVA for quadratic model: response 1: surface area, transform: square root.
| Source | Sum of squares | Df | Mean square | F value | p-value Prob > F | |
|---|---|---|---|---|---|---|
| Model | 1866.19 | 14 | 133.30 | 1021.35 | <0.001 | Significant |
| A-Carbonization temperature | 16.44 | 1 | 16.44 | 104.96 | 0.001 | Significant |
| B-Impregnation ratio | 50.00 | 1 | 50.00 | 95.52 | <0.016 | Significant |
| C-Activation time | 5.05 | 1 | 5.05 | 24.59 | 0.048 | Significant |
| AB | 0.12 | 1 | 0.12 | 90.11 | 0.010 | Significant |
| AC | 1.23 | 1 | 1.23 | 1.12 | 0.062 | Not Significant |
| BC | 19.98 | 1 | 19.98 | 180.19 | 0.007 | Significant |
| A2 | 121.88 | 1 | 121.88 | 910.95 | <0.001 | Significant |
| B2 | 67.15 | 1 | 67.15 | 617.13 | <0.001 | Significant |
| C2 | 18.12 | 1 | 18.12 | 169.49 | 0.001 | Significant |
| Lack of fit | 1.55 | 9 | 0.17 | 0.05 | 0.996 | Not Significant |
| Pure error | 14.93 | 6 | 1.76 |