Optimisation of Cutting Tool and Cutting Parameters in Face Milling of Custom 450 through the Taguchi Method

Table 6

ANOVA for S/N ratios of R_a.

Control factors	Degree of freedom (SD)	Sum of squares (Ct)	Mean squares (MS)	values	values	PCR (%)
Ct	3	29.381	9.794	13.36	0.005	27.63
Vc	3	18.977	6.326	8.63	0.013	17.85
F	3	53.558	17.853	24.36	0.001	50.38
Error	6	4.398	0.733			4.14
Total	15	106.314				100.0
R^2	% 95.86