Table 20 ANOVA results for quadratic model (exploitation 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

1224.86

7

174.98

2.51

0.1645

Not significant

A-Pressure

128.00

1

128.00

1.83

0.2337

 

B-Velocity

40.50

1

40.50

0.5800

0.4807

 

AB

4.00

1

4.00

0.0573

0.8203

 

A2

3.58

1

3.58

0.0512

0.8299

 

B2

374.08

1

374.08

5.36

0.0685

 

A2B

85.33

1

85.33

1.22

0.3193

 

AB2

16.33

1

16.33

0.2339

0.6491

 

Residual

349.14

5

69.83

   

Lack of fit

349.14

1

349.14

   

Pure error

0.0000

4

0.0000

   

Cor total

1574.00

12

    

Std. dev.

8.36

R2

0.7782

Mean

72.00

Adjusted R2

0.4676

C.V.%

11.61

Adeq precision

5.1315