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Table 2 Investigation of the independent and interaction effect of variables on each response

From: A simple and efficient method for cytoplasmic production of human enterokinase light chain in E. coli

Source

Sum of squares

DF

Mean square

F value

Prob > F

Mean

7.696E + 010

1

7.696E + 010

  

Linear

2.304E + 009

3

7.680E + 008

0.26

0.8543

2FI

1.638E + 009

3

5.460E + 008

0.15

0.9290

Quadratic

2.486E + 010

3

8.287E + 009

4.76

0.0410

Cubic

9.917E + 009

4

2.479E + 009

3.28

0.1785

Residual

2.270E + 009

3

7.567E + 008

  

Total

1.179E + 011

17

6.938E + 009

  
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