[Retracted] Optimization of Process Parameters for Friction Stir Welding of Different Aluminum Alloys AA2618 to AA5086 by Taguchi Method

Table 7

Means-variance analysis.

Source	Degrees of freedom	Seq SS	Adj MS		% Contribution
A	3	14428.6	4812.124	0.81	15.81
B	3	12168.2	4128.41	0.51	14.12
C	3	26.41.2	861.1312	0.22	2.16
D	3	52471.6	17817.34	4.71	61.50
Residual error	3	5681.3	1871.7		6.1284
Total	15	81342.1			100