Research Article
Polysaccharides of Scrophularia ningpoensis Hemsl.: Extraction, Antioxidant, and Anti-Inflammatory Evaluation
Table 5
Analysis of variance (ANOVA) of the quadratic model and lack-of-fit.
| Source | Sum of squares | Df | Mean square | F-value | Value | Significance |
| Model | 13.22 | 9 | 1.47 | 16.13 | 0.00007 | <0.0001 | X1 | 0.041 | 1 | 0.041 | 0.45 | 0.5256 | — | X2 | 1.51 | 1 | 1.51 | 16.53 | 0.0048 | <0.01 | X3 | 0.60 | 1 | 0.60 | 6.64 | 0.0366 | <0.05 | X1X2 | 0.15 | 1 | 0.15 | 1.67 | 0.2372 | — | X1X3 | 0.59 | 1 | 0.59 | 6.43 | 0.0389 | <0.05 | X2X3 | 0.024 | 1 | 0.024 | 0.26 | 0.6233 | — | X12 | 2.81 | 1 | 2.81 | 30.83 | 0.0009 | <0.0001 | X22 | 1.38 | 1 | 1.38 | 15.10 | 0.0060 | <0.01 | X32 | 5.13 | 1 | 5.13 | 56.36 | 0.0001 | <0.0001 | Residual | 0.64 | 7 | 0.091 | — | — | — | Lack-of-fit | 0.40 | 3 | 0.13 | 2.26 | 0.224 | — | Pure error | 0.24 | 4 | 0.059 | — | — | — | Cor total | 13.86 | 16 | — | — | — | — | R2 | 0.954 | — | — | — | — | — | Adj. R2 | 0.895 | — | — | — | — | — | Adeq. Precision | 11.447 | — | — | — | — | — |
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C.V.% = 2.47, significant at 0.05 level; significant at 0.01 level; significant at 0.001 level. |