Optimization of Cryogenic Process Parameters for the Minimization of Surface Residual Stress in Pure Iron Using Taguchi Design

Table 4

Analysis of variance for cutting residual stress model.

Source	Regression	Residual error	Total
Df	4	4	8
Sum of squares	0.15185	0.02774	0.17958
Mean square	0.03796	0.00693
F value	5.4748
Prob > F	0.06419
Remarks	Not significant