Table IV.

Results of Model Coefficients and the Regression Analysis of Variance (ANOVA) of the Fitted Model for All Responses

Responses	Model coefficients			Regression analysis of variance
	Factor	Coefficients	P value	F	P value	R 2	Adj R 2	Adeq Precision
Q1	Intercept	97.3052		5.17	0.0265	0.7869	0.6346	5.607
	X1	3.0883	0.1930
	X2	−6.7133	0.0166
	X12	−0.5881	0.8577
	X22	−10.0831	0.0153
	X1X2	−3.2125	0.2609
Q2	Intercept	238.7966		64.91	<0.0001	0.9789	0.9638	26.110
	X1	27.0167	<0.0001
	X2	12.6833	0.0002
	X12	20.0121	0.0001
	X22	−6.3879	0.0495
	X1X2	−3.4500	0.1671
Q3	Intercept	0.1347		7.35	0.0104	0.8400	0.7257	7.332
	X1	0.0238	0.0491
	X2	0.0373	0.0074
	X12	0.0141	0.3722
	X22	0.0466	0.0161
	X1X2	−0.0168	0.2148
Q4	Intercept	−24.1828		13.91	0.0016	0.9085	0.8432	10.232
	X1	−3.4833	0.0009
	X2	−0.4667	0.4817
	X12	−4.5603	0.0017
	X22	−1.3103	0.1999
	X1X2	−0.8750	0.2928
Y1	Intercept	88.5969		33.86	<0.0001	0.9603	0.9319	16.340
	X1	−14.3733	0.0006
	X3	8.8433	0.0081
	X12	−30.2741	<0.0001
	X32	−11.4341	0.0149
	X1X3	0.8700	0.7776
Y2	Intercept	238.4276		400.30	<0.0001	0.9965	0.9940	68.307
	X1	77.1000	<0.0001
	X3	34.8000	<0.0001
	X12	24.2035	<0.0001
	X32	14.1035	0.0018
	X1X3	7.8000	0.0144
Y3	Intercept	0.3704		137.33	<0.0001	0.9899	0.9827	36.092
	X1	0.02150	0.0008
	X3	0.0862	<0.0001
	X12	0.0377	0.0003
	X32	0.0357	0.0004
	X1X3	−0.0003	0.4761
Y4	Intercept	−29.1069		12.18	0.0024	0.8969	0.8233	11.116
	X1	−1.1500	0.0183
	X3	−1.5500	0.0044
	X12	−0.7259	0.2313
	X32	−1.7259	0.0169
	X1X3	1.9250	0.0041