Table 3 The results of ANOVA.

From: Application of response surface methodology for modeling adsorption of janus green and safranin-O on magnetic nanocomposite from aqueous solutions

Source

DF

JG

SO

Sum of squares

Mean square

F-value

P-value

Sum of squares

Mean square

F-value

P-value

Model

14

12,180.43

870.03

360.24

 < 0.0001

8304.85

593.20

188.24

 < 0.0001

A

1

2613.97

2613.97

1082.33

 < 0.0001

1012.44

1012.44

321.27

 < 0.0001

B

1

1504.64

1504.64

623.01

 < 0.0001

1713.32

1713.32

543.67

 < 0.0001

C

1

2036.70

2036.70

843.31

 < 0.0001

1776.07

1776.07

563.59

 < 0.0001

D

1

1738.25

1738.25

719.74

 < 0.0001

437.59

437.59

138.86

 < 0.0001

AB

1

0.9653

0.9653

0.3997

0.5368

23.43

23.43

7.43

0.0156

AC

1

7.04

7.04

2.91

0.1085

2.96

2.96

0.9388

0.3480

AD

1

1.66

1.66

0.6864

0.4204

3.65

3.65

1.16

0.2990

BC

1

8.66

8.66

3.59

0.0778

1.90

1.90

0.6043

0.4490

BD

1

32.75

32.75

13.56

0.0022

9.00

9.00

2.86

0.1117

CD

1

14.88

14.88

6.16

0.0254

5.02

5.02

1.59

0.2263

A2

1

1602.52

1602.52

663.54

 < 0.0001

1274.83

1274.83

404.53

 < 0.0001

B2

1

2829.18

2829.18

1171.44

 < 0.0001

1631.00

1631.00

517.55

 < 0.0001

C2

1

501.25

501.25

207.55

 < 0.0001

932.67

932.67

295.96

 < 0.0001

D2

1

707.11

707.11

292.78

 < 0.0001

850.97

850.97

270.03

 < 0.0001

Residual

15

36.23

2.42

  

47.27

3.15

  

Lack of fit

10

18.04

1.80

0.4957

0.8386

29.22

2.92

0.8091

0.6732

Pure error

5

18.19

3.64

  

18.05

3.61

  

Cor total

29

12,216.65

   

8352.12

   

Model summary statistics

Precision

JG

 

SO

R2

R2-Adj

AP

R2

R2-Adj

AP

0.9970

0.9943

65.66

0.9943

0.9891

44.32