Table 2.
ANOVA for the fitted quadratic polynomial model for IC50 value of antioxidant activity.
| Source | Sum of Squares | Degrees of Feedom | F | P | R2 | R2 (Adj) |
|---|---|---|---|---|---|---|
| Model | 0.04 | 9 | 13.51 | 0.0012 | 0.9456 | 0.8756 |
| X1 | 0.0090 | 1 | 27.22 | 0.0012 | ||
| X2 | <0.0001 | 1 | 0.024 | 0.8806 | ||
| X3 | 0.017 | 1 | 53.02 | 0.0002 | ||
| X1 X2 | 0.0011 | 1 | 3.03 | 0.1120 | ||
| X1 X3 | 0.0037 | 1 | 11.28 | 0.0121 | ||
| X2 X3 | 0.0005 | 1 | 1.60 | 0.2458 | ||
| X12 | 0.0011 | 1 | 3.27 | 0.1136 | ||
| X22 | 0.0027 | 1 | 8.30 | 0.0236 | ||
| X32 | 0.0037 | 1 | 11.11 | 0.0125 | ||
| Residual | 0.0023 | 7 | ||||
| Lack of fit | 0.0014 | 3 | 2.03 | 0.2517 | ||
| Pure error | 0.0009 | 4 | ||||
| Cor total | 0.042 | 16 |