Table 3.

Analysis of variance for determination of optimisation model fit.

Parameters	Phytochemicals			Antioxidant capacity
	TPC	TFC	Pro. A	FRAP	CUPRAC	ABTS	DPPH
R2	0.94	0.88	0.93	0.98	0.96	0.97	0.90
Adjusted R2	0.84	0.66	0.79	0.93	0.89	0.92	0.71
RMSE	3.38	3.37	3.06	18.94	147.52	34.36	42.89
Lack of fit	0.809	0.429	0.109	0.145	0.649	0.787	0.032
F ratio of model	9.01	3.98	7.03	23.00	13.51	17.75	4.86
P of model > F	0.013	0.07	0.02	0.001	0.005	0.002	0.048