Table 4.
Statistical parameters after data analysis and fit with factorial model.
| Evaluated Response | Total Phenolic Content | Total Flavonoid Content | Condensed Tannin Content | Antioxidant Activity | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (R2 = 0.96, Q2 = 0.91) | (R2 = 0.92, Q2 = 0.78) | (R2 = 0.95, Q2 = 0.88) | (R2 = 0.97, Q2 = 0.92) | |||||||||||||||||
| Reproducibility | 0.95 | 0.98 | 0.97 | 0.99 | ||||||||||||||||
| SS | DF | MS | F-v | p-v | SS | DF | MS | F-v | p-v | SS | DF | MS | F-v | p-v | SS | DF | MS | F-v | p-v | |
| Regression | 286,363 | 5 | 57,272.6 | 61.46 | 0.001 | 2819.57 | 5 | 563.91 | 26.71 | 0.001 | 1728.27 | 5 | 345.65 | 46.74 | 0.001 | 5.26 × 105 | 6 | 878,126 | 69.9 | 0.001 |
| Lack of fit | 8678.93 | 9 | 964.32 | 1.22 | 0.527 | 227.15 | 9 | 25.23 | 9.99 | 0.094 | 75.94 | 9 | 8.43 | 3.12 | 0.266 | 122,720 | 8 | 15,340 | 10.58 | 0.089 |
| Pure error | 1570.49 | 2 | 785.24 | 5.04 | 2 | 2.52 | 5.39 | 2 | 2.69 | 2899.26 | 2 | 1449.63 | ||||||||
R2: Coefficient of correlation/goodness of fit; Q2: Goodness of prediction; SS: Sum of squares; DF: Degrees of freedom; MS: Mean square; F-v: F-value, Fischer’s ratio; p-v: p-value, probability.