Table 2.

ANOVA and regression coefficients of the second-order polynomial model for the response variables (actual values).

Source	DF	EE%			Size(nm)
		Coefficient	Sum of Squares	p Value	Coefficient	Sum of Squares	p Value
Model	9	70.16	68.15	<0.0001	172.14	93.94	0.0045
Linear
X1	1	0.55	4.15	0.0037	0.31	1.35	0.3946
X2	1	−0.30	2.81	0.0113	−0.053	0.086	0.8266
X3	1	0.83	9.38	0.0002	0.026	8.95× −3	0.9436
Quadratic
X12	1	−1.01	14.60	<0.0001	−1.39	27.89	0.0023
X22	1	−0.61	27.33	<0.0001	−0.80	46.53	0.0004
X32	1	−1.17	19.64	<0.0001	−1.55	34.64	0.0011
Interaction
X1X2	1	−0.089	0.14	0.5008	−0.083	0.12	0.7920
X1X3	1	−0.019	2.812 × −3	0.9239	0.28	0.61	0.5645
X2X3	1	0.056	0.056	0.6712	0.17	0.50	0.5999
Residual	10		2.93			17.04
Lack of fit	5		1.37	0.5580		8.96	0.4563
Pure error	5		1.57			1.62
Total	19		71.08			110.98
R2		0.9587			0.8465
Adj-R2		0.9216			0.7883
CV		0.80			0.78