Statistical and Experimental Investigation of Hardened AISI H11 Steel in CNC Turning with Alternative Measurement Methods

Table 6

Analysis of variance for surface roughness.

Source	DF	Adj SS	Adj MS	F value	value	Contr. %
	1	0.02205	0.022050	8.52	0.010	1.94
	1	0.00161	0.001606	0.62	0.442	0.14
F	1	0.99405	0.994050	384.17	≤0.001	87.42
	1	0.00098	0.000980	0.38	0.547	0.09
	1	0.00005	0.000046	0.02	0.895	0.01
	1	0.06756	0.067557	26.11	≤0.001	5.94
	1	0.00101	0.001008	0.39	0.541	0.09
	1	0.00563	0.005633	2.18	0.158	0.50
	1	0.00013	0.000133	0.05	0.823	0.01
Error	17	0.04399	0.002588	—	—	3.87
Total	26	1.13705	—	—	—	100.00

Significant P values are marked in bold.