Table 4 Sequential model fitting for the removal of MG dye by rGO/ -Fe2O3 nanocomposite.

From: Response surface methodology for the design of malachite green dye removal by γ-Fe2O3 dispersed on reduced graphene oxide sheets

Source

Sum of Squares

Df

Mean Square

F-value

p-value

Remark

Mean vs. Total

31065.59

1

31065.59

   

Linear vs. Mean

15759.16

4

3939.79

29.18

< 0.0001

 

2FI vs. Linear

1016.63

6

169.44

1.40

0.2787

 

Quadratic vs. 2FI

1772.99

4

443.25

106.53

< 0.0001

Suggested

Cubic vs. Quadratic

31.41

8

3.93

0.8204

0.6360

Aliased

Residual

14.36

3

4.79

   

Total

49660.14

26

1910.01

   
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