Table 4 ANOVA for response surface reduced quadratic model with backward elimination regression.

From: Exemplifying an archetypal thorium-EPS complexation by novel thoriotolerant Providencia thoriotolerans AM3

Source

Sum of squares

Degrees of freedom

Mean square

F value

p value

A-NaCl

1.442E−003

1

1.442E−003

10.05

0.0043**

C-beef extract

7.350E−005

1

7.350E−005

0.51

0.4814NS

D-yeast extract

0.021

1

0.021

143.10

< 0.0001**

AD

9.000E−004

1

9.000E−004

6.27

0.0198**

CD

4.410E−004

1

4.410E−004

3.07

0.0929NS

C2

1.056E−003

1

1.056E−003

7.36

0.0124**

Residual

3.300E−003

23

1.435E−004

  

Lack of fit

2.939E−003

18

1.633E−004

2.26

0.1866NS

Pure error

3.608E−004

5

7.217E−005

  

Cor total

0.028

29

   

Model

0.024

6

4.074E−003

28.39

 < 0.0001**

  1. *p > 0.05, **p > 0.01, NS non-significant.
  2. Non-significant terms removed via backward regression alpha to exit = 0.100.
  3. R2 = 0.8811, Adj-R2 = 0.8500, Pred-R2 = 0.7324.