Table 4.

Analysis of variance for solid yield.

Source	DF	Adj SS	Adj MS	F-Value	p-Value
Model	5	1980.73	396.15	10.40	<0.0001
Linear	2	1917.99	959.00	25.18	<0.0001
X1	1	1073.39	1073.39	28.18	<0.0001
X2	1	844.61	844.61	22.17	<0.0001
Square	2	44.73	22.37	0.59	0.565
X1 X1	1	17.57	17.57	0.46	0.504
X2 X2	1	27.16	27.16	0.71	0.408
Two-Way Interaction	1	18.01	18.01	0.47	0.499
X1 X2	1	18.01	18.01	0.47	0.499
Error	21	799.93	38.09
Lack-of-Fit	3	180.21	60.07	1.74	0.194
Pure Error	18	619.72	34.43
Total	26	2780.66

DF—degree of freedom; SS—sum of squares; MS—mean sum of squares.