Table 6.
Analysis of variance showing effects of treatment variables as linear, quadratic terms and interaction effects on response variables of crude fat.

Source	Degree of freedom	Fine fraction		Coarse fraction
		F value	Pr>F	F value	Pr>F
Model	9	8.51	<0.001	1.79	0.144
Liner	3	15.21	<0.001	2.90	0.065
Quadratic	3	9.23	0.001	1.49	0.253
Cross	3	1.10	0.375	0.99	0.421
R2		0.818		0.487
X11)	4	10.09	0.006	8.31	0.010
X2	4	12.46	0.003	0.29	0.599
X3	4	23.08	<0.001	0.10	0.761

Mill speed (rpm), Separator reverse wheel speed (rpm), Air classifier reverse wheel speed (rpm).