Optimization of the Physical and Mechanical Properties of a Spline Surface Fabricated by High-Speed Cold Roll Beating Based on Taguchi Theory

Table 8

Significant test of residual stress regression model.

Sources of variance	Sum of squares	Degrees of freedom	Complex correlation coefficient	value	value
Regression	551.7982	5	0.9844	176.5416	<0.0001
Residual	8.7515	14
Total	560.5497	19