Optimization of Flavonoid Extraction in Dendrobium officinale Leaves and Their Inhibitory Effects on Tyrosinase Activity

Table 5

ANOVA and R-squared for selected factorial model.

Source	Sum of squares		Mean	F	p-value
		df	Square	Value	Prob>F
Model	149.63	2	74.82	24.96	0.0002	significant
C-number	94.25	1	94.25	31.44	0.0003
D-Methanol	55.38	1	55.38	18.48	0.002
Residual	26.98	9	3.00
Cor Total	176.61	11
Std. Dev.	1.73
Mean	25.86
C.V.%	6.70
PRESS	47.96
R-Squared	0.8472
Adj R-Squared	0.8133
Pred R-Squared	0.7284
Adeq Precisior	11.438