Table 3.
Analysis of variance (ANOVA) for full factorial design
| Source | Sum of squares | df | Mean square | F value |
p value Prob > F |
|
|---|---|---|---|---|---|---|
| Model | 152.3 | 14 | 10.88 | 39.85 | < 0.0056 | Significant |
| B-peptone | 7.90 | 1 | 7.90 | 28.91 | 0.0126 | |
| C-NaNO3 | 0.65 | 1 | 0.65 | 2.37 | 0.2211 | |
| D-temp | 57.30 | 1 | 57.30 | 209.83 | 0.0007 | |
| E-oil | 22.52 | 1 | 22.52 | 82.44 | 0.0028 | |
| AB | 5.88 | 1 | 5.88 | 21.53 | 0.0189 | |
| AC | 5.48 | 1 | 5.48 | 20.05 | 0.0208 | |
| AD | 0.60 | 1 | 0.60 | 2.20 | 0.234 | |
| AE | 0.83 | 1 | 0.83 | 3.03 | 0.180 | |
| BC | 1.19 | 1 | 1.19 | 4.35 | 0.128 | |
| BD | 3.78 | 1 | 3.78 | 13.08 | 0.036 | |
| Residual | 19.22 | 16 | 1.20 | |||
| Lack of fit | 0.44 | 1 | 0.44 | 1.62 | 0.292 | Not significant |
| Pure error | 0.82 | 2 | 0.41 | |||
| Cor total | 153.62 | 18 |