Table 1.

ANOVA for the fitted quadratic polynomial model for total flavonoids content.

Source	Sum of Squares	df	F	P	R2	R2 (Adj)
Model	54.55	9	55.39	<0.0001	0.9862	0.9684
X1	2.76	1	25.23	0.0015
X2	0.59	1	5.43	0.0526
X3	10.58	1	96.69	<0.0001
X1X2	2.250 × 10−4	1	2.056 × 10−3	0.0304
X1X3	0.80	1	7.32	0.6743
X2X3	0.021	1	0.19	0.0165
X12	13.05	1	119.29	<0.0001
X22	8.20	1	74.96	<0.0001
X32	14.42	1	131.80	<0.0001
Residual	0.77	7
Lack of Fit	0.65	3	7.71	0.0387
Pure Error	0.11	4
Cor Total	55.32	16