Journal of Materials Science: Materials in Engineering

Table 8 The coefficients of statistical model

From: Effects of tool offset, pin offset, and alloys position on maximum temperature in dissimilar FSW of AA6061 and AA5086

Source	Std. dev.	R²	Adjusted R²	Predicted R²	PRESS
Linear	33.06	0.7665	0.7347	0.6212	39017.81
2FI	32.22	0.8085	0.7481	0.5133	50129.65
Quadratic	9.17	0.9861	0.9796	0.9369	6500.44	Suggested
Cubic	1.76	0.9996	0.9992	0.9934	675.71	Aliased

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