Table 15 ANOVA table for el% (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

2665.171

9

296.1301

12.35744

0.0003

significant

Residual

239.6371

10

23.96371

   

Lack of Fit

219.3288

5

43.86575

10.79994

0.0103

significant

Pure Error

20.30833

5

4.061667

   

Cor Total

2904.808

19

    
Back to article page