Table 6 Analysis of Variance for SR after dropping insignificant factors and interactions

From: Processing of Al₂O₃–SiC_w–TiC ceramic composite by powder mixed electric discharge grinding

Source	DF	Seq SS	Adj SS	Adj MS	F	P
Regression	15	1.85864	1.85864	0.097823	1151.09	0.000000
Residual error	16	0.0000000	0.0000000	0.0000000
Lack-of-Fit	11	0.0000000	0.0000000	0.0000000	1.69	0.291328
Pure Error	5	0.0000000	0.0000000	0.0000000
Total	31	1.85966

DF Degree of freedom, SS Sum of squares, MS Mean square
R-Sq = 99.95%; R-Sq(pred) = 99.38%; R-Sq(adj) = 99.86%
F > F_0.01,15,16
F_{lack of fit} < F_0.01,11,16
Model is adequate (F_0.01,15,16 = 3.41)
Lack of fit is insignificant (F_0.01,11,16 = 3.69)

Back to article page