Table 5.

ANOVA for significant interactions.

Source	DF	Seq. SS	Adj. SS	Adj. MS	F	P
Regression	8	691.14	691.14	86.39	32.76	0.000
Linear	4	602.24	602.24	150.56	57.10	0.000
Square	2	50.10	50.10	25.05	9.50	0.001
Interaction	2	38.80	38.80	19.40	7.36	0.004
Residual error	22	58.01	58.01	2.64
Lack of fit	16	50.39	50.39	3.15	2.48	0.134
Pure error	6	7.62	7.62	1.27
Total	30	749.15

S = 1.624; R ² = 92.3%; R ² (adj.) = 89.4%; F = adj. MS factor/adj. MS error.