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Table 6 ANOVA for removal of MB

From: A chemometric approach based on response surface methodology for optimization of antibiotic and organic dyes removal from water samples

Source

Sum of squares

DF*

Mean square

F-value

p-value

 

Model

7485.59

14

534.69

200.93

 < 0.0001

Significant

A

212.02

1

212.02

79.67

 < 0.0001

Significant

B

243.99

1

243.99

91.69

 < 0.0001

Significant

C

228.55

1

228.55

85.89

 < 0.0001

Significant

D

260.96

1

260.96

98.07

 < 0.0001

Significant

AB

324.18

1

324.18

121.82

 < 0.0001

Significant

AC

1677.31

1

1677.31

630.32

 < 0.0001

Significant

AD

35.64

1

35.64

13.39

0.0026

Not significant

BC

764.80

1

764.80

287.40

 < 0.0001

Significant

BD

81.09

1

81.09

30.47

 < 0.0001

Significant

CD

141.73

1

141.73

53.26

0.0013

Not significant

A2

2035.69

1

2035.69

764.99

 < 0.0001

Significant

B2

1392.46

1

1392.46

523.27

 < 0.0001

Significant

C2

197.41

1

197.41

74.18

 < 0.0001

Significant

D2

1379.90

1

1379.90

518.55

 < 0.0001

Significant

Residual

37.25

14

2.66

   

Lack of Fit

25.95

10

2.59

0.9180

0.5873

Not significant

Pure Error

11.31

4

2.83

   

Cor Total

7522.85

28

    

R2 = 0.9950

Adjusted R2 = 0.9901

 

Predicted R2 = 0.9778

 

Adeq-Precision = 46.71

 
  1. *Degree of freedom