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Table 7 Sequential model sum of squares

From: Enhancement of feather degrading keratinase of Streptomyces swerraensis KN23, applying mutagenesis and statistical optimization to improve keratinase activity

Source

Sum of Squares

Df

Mean Square

F-value

p-value

 

Mean vs Total

2.801E + 05

1

2.801E + 05

   

Linear vs Mean

2147.71

4

536.93

2.19

0.0993

 

2FI vs Linear

241.83

6

40.30

0.1301

0.9909

 

Quadratic vs 2FI

5486.22

4

1371.55

51.31

 < 0.0001

Suggested

Cubic vs Quadratic

290.65

8

36.33

2.31

0.1438

Aliased

Residual

110.28

7

15.75

   

Total

2.884E + 05

30

9613.44

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