Table 3 ANOVA for the response surface Box–Behnken quadratic model.
From: Optimisation of Goose oil extraction process by response surface methodology
Source | Sum of | df | Mean | F Value | P Value | significance |
---|---|---|---|---|---|---|
Model | 1692.81 | 14 | 120.92 | 16.69 | < 0.0001 | * |
A-ultrasonic power | 1.89 | 1 | 1.89 | 0.2607 | 0.6176 | — |
B-withdrawal time | 20.86 | 1 | 20.86 | 2.88 | 0.1118 | — |
C-material-liquid ratio | 222.48 | 1 | 222.48 | 30.72 | < 0.0001 | ** |
D-extraction temperature | 316.73 | 1 | 316.73 | 43.73 | < 0.0001 | ** |
AB | 96.63 | 1 | 96.63 | 13.34 | 0.0026 | * |
AC | 33.64 | 1 | 33.64 | 4.64 | 0.049 | — |
AD | 5.71 | 1 | 5.71 | 0.7886 | 0.3895 | — |
BC | 3.71 | 1 | 3.71 | 0.5116 | 0.4862 | — |
BD | 6.33 | 1 | 6.33 | 0.8733 | 0.3659 | — |
CD | 7.02 | 1 | 7.02 | 0.9696 | 0.3415 | — |
A² | 333.51 | 1 | 333.51 | 46.05 | < 0.0001 | ** |
B² | 330.26 | 1 | 330.26 | 45.6 | < 0.0001 | ** |
C² | 563.34 | 1 | 563.34 | 77.78 | < 0.0001 | ** |
D² | 278.86 | 1 | 278.86 | 38.5 | < 0.0001 | ** |
Residual | 101.4 | 14 | 7.24 | — | — | — |
Lack of fit | 71.92 | 10 | 7.19 | 0.9756 | 0.5597 | — |
Pure error | 29.49 | 4 | 7.37 | — | — | — |
Cor total | 1794.22 | 28 | — | — | — | — |
R2 = 0.9435 |