Flavonoids Extraction from Taraxacum officinale (Dandelion): Optimisation Using Response Surface Methodology and Antioxidant Activity

Table 3

ANOVA for fitted quadratic polynomial model of extraction of flavonoids.

Source	Sum of squares	Degree of freedom	Mean square	F value	P value
Model	0.13	9	0.015	21.99	<0.001
Residual	4.74 × 10^−3	7	6.78 × 10^−4
Lack of fit	1.82 × 10^−3	3	6.08 × 10^−3	0.83	0.5413
Pure error	2.92 × 10^−3	4	7.30 × 10^−4
Cor. total	0.14	16

Note: 𝑅²=0.9658; 𝑅²_adj=0.9219; CV = 1.05.