Table 21 ANOVA results for quadratic model (voids zone is response) of QAMf.

From: Mathematical modeling of wear behavior and Abbott Firestone zones of 0.16C steel using response surface methodology

Source

Sum of squares

df

Mean square

F-value

p-value

 

Model

4.73

7

0.6752

78.32

 < 0.0001

Significant

A-Pressure

0.0000

1

0.0000

0.0000

1.0000

 

B-Velocity

0.5000

1

0.5000

58.00

0.0006

 

AB

0.2500

1

0.2500

29.00

0.0030

 

A2

0.0402

1

0.0402

4.67

0.0832

 

B2

1.06

1

1.06

123.43

0.0001

 

A2B

0.0833

1

0.0833

9.67

0.0266

 

AB2

0.0833

1

0.0833

9.67

0.0266

 

Residual

0.0431

5

0.0086

   

Lack of fit

0.0431

1

0.0431

   

Pure error

0.0000

4

0.0000

   

Cor total

4.77

12

    

Std. dev.

0.0928

R2

0.9910

Mean

0.3077

Adjusted R2

0.9783

C.V.%

30.18

Adeq precision

27.4591

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