Prediction of Crack for Drilling Process on Alumina Using Neural Network and Taguchi Method

Table 6

ANOVA for cracking percentage.

Sources of variance	Degrees of freedom (DOF)	Sum of squares (SS)	Variance (Var.)	-ratio	value
	2	42.602	21.301	4.12	0.054
	2	124.78	62.39	12.05	0.003
	2	246.13	123.065	23.77	0
	2	142.075	71.038	13.72	0.002
Error	9	46.588	5.176
Total	17	602.175