Table 1.
ANOVA table of the quadratic response surface model.
| Source | SSa | Dfb | MSc | F-value | Prob > F |
|---|---|---|---|---|---|
| Model | 9258.76 | 10 | 925.88 | 30.66 | < 0.0001 (significant) |
| A-Temp | 5342.73 | 1 | 5342.73 | 176.91 | < 0.0001 |
| B-Time | 1993.69 | 1 | 1993.69 | 66.02 | < 0.0001 |
| C-Cat | 99.53 | 1 | 99.53 | 3.30 | 0.0853 |
| D-Molar ratio of acid: alcohol | 341.95 | 1 | 341.95 | 11.32 | 0.0033 |
| AB | 191.20 | 1 | 191.20 | 6.33 | 0.0210 |
| AC | 264.88 | 1 | 264.88 | 8.17 | 0.0100 |
| AD | 278.31 | 1 | 278.31 | 9.22 | 0.0068 |
| A2 | 308.62 | 1 | 308.62 | 10.22 | 0.0047 |
| B2 | 119.34 | 1 | 119.34 | 3.95 | 0.0614 |
| D2 | 575.79 | 1 | 575.79 | 19.07 | 0.0003 |
| Residual | 673.34 | 19 | 30.20 | – | – |
| Lack of fit (Not significant) | 566.39 | 14 | 33.35 | 1.56 | 0.3278 |
| Pure Error | 106.95 | 5 | 21.39 | – | – |
| Cor Total | 983,257 | 29 | – | – | – |
aStand for sum of square.
bDegree of freedom.
cMean of source.