Table 7 Variance analysis results of the response value Y.

From: Optimizing fluidity and tensile strength of magnetically driven epoxy-cement repair materials based on response surface

Source

SS

DF

MS

F

Pr > F

Note

Model

5.25

14

0.37

26.99

< 0.0001

**

A1

0.98

1

0.98

70.61

< 0.0001

**

A2

0.59

1

0.59

42.21

< 0.0001

**

A3

0.01

1

0.01

0.41

0.5312

 

A4

0.05

1

0.05

3.57

0.0785

 

A1A2

0.01

1

0.01

0.68

0.4209

 

A1A3

0.29

1

0.29

20.81

0.0004

**

A1A4

0.04

1

0.04

3.10

0.0986

 

A2A3

0.50

1

0.50

36.06

< 0.0001

**

A2A4

0.95

1

0.95

68.14

< 0.0001

**

A3A4

0.07

1

0.07

4.78

0.0451

*

A2 1

0.64

1

0.64

46.27

< 0.0001

**

A2 2

0.63

1

0.63

45.52

< 0.0001

**

A2 3

0.17

1

0.17

12.03

0.0034

**

A2 4

0.97

1

0.97

69.86

< 0.0001

**

Residual

0.21

15

0.01

   

Lack of fit

0.18

10

0.02

2.95

0.1223

 

Pure error

0.03

5

0.01

   

Total

5.45

29

    
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