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Table 3 ANOVA for the quadratic regression model in BBD

From: Extraction, purification, characterization and antioxidant activities of polysaccharides from Ramaria botrytis (Pers.) Ricken

Source

Sum of squares

DF

Mean squares

F value

p value

Model

27.31

9

3.03

30.20

<0.0001

X 1

0.60

1

0.60

5.97

0.0446

X 2

20.35

1

20.35

202.53

<0.0001

X 3

0.34

1

0.34

3.39

0.1083

X 1 X 2

0.022

1

0.022

0.22

0.6505

X 1 X 3

0.06

1

0.06

0.60

0.4649

X 2 X 3

0.09

1

0.09

0.90

0.3755

X 21

2.81

1

2.81

27.95

0.0011

X 22

0.07

1

0.07

0.70

0.4304

X 23

2.54

1

2.54

25.28

0.0015

Residual

0.70

7

0.10

  

Lack of fit

0.38

3

0.13

1.54

0.3336

Pure error

0.33

4

0.081

  

Cor total

28.01

16

   

R2

0.9749

 

Adj-R2

0.9626