Table 14 ANOVA table for YS (Response surface quadratic Model).

From: Effect of friction stir processing parameters on mechanical properties of different aluminum alloy plates

Source

Sum of Squares

DF

Mean - Square

F-Value

Prob > F

 

Model

15,265

9

1696.111

2.611494

0.0755

not significant

Residual

6494.794

10

649.4794

   

Lack of Fit

4750.734

5

950.1469

2.723951

0.1478

not significant

Pure Error

1744.06

5

348.812

   

Cor Total

21759.8

19

    
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