Extraction Optimization of Tinospora cordifolia and Assessment of the Anticancer Activity of Its Alkaloid Palmatine

Table 3

Analysis of variance for fitted 2FI polynomial model.

Source	Sum of square	Degree of freedom	Mean square	F-value	P value
Model	26.83	6	4.47	4.00	0.019 significant
Residual	13.40	12	1.12
Lack of fit	7.52	8	0.94	0.64	0.726 not significant
Pure error	5.88	4	1.47
Cor total	40.23	18