Table 11.

ANOVA analysis for CCD regression equations

Source	Sum of squares	Df	Mean square	F-value	P-value
Model	15206097	9	1689566	57.29	0.000***
A	654877	1	654877	22.21	0.001**
B	260592	1	260592	8.84	0.014*
F	222534	1	222534	7.55	0.021*
A2	5742543	1	5742543	194.73	0.000***
B2	4098925	1	4098925	139.00	0.000***
F2	6547266	1	6547266	222.02	0.000***
AB	253828	1	253828	8.61	0.015*
AF	31626	1	31626	1.07	0.325
BF	67896	1	67896	2.30	0.160
Residual	294893	10	29489
Lack of Fit	133078	5	26616	0.82	0.582
Pure error	161815	5	32363
Cor total	1915500990	19

R² = 0.9810, adjusted R² = 0.9639, predicted R² = 0.9186

Note:

^*Significant at the P < 0.05 level

^**Significant at the P < 0.01 level

^*** Significant at the P < 0.001 level