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Table 3 ANOVA for Sargassum myriocystum biodiesel and regression coefficient estimate

From: Optimization of algal methyl esters using RSM and evaluation of biodiesel storage characteristics

Source

Sum of squares

df

Mean square

Fvalue

pvalue probability > F

 

Model

2,480.56

14

177.18

465.69

<0.0001

Significant

A

4.80

1

4.80

12.63

0.0029

 

B

32.00

1

32.00

84.10

<0.0001

 

C

212.18

1

212.18

557.67

<0.0001

 

D

68.84

1

68.84

180.92

<0.0001

 

AB

41.60

1

41.60

109.34

<0.0001

 

AC

79.21

1

79.21

208.19

<0.0001

 

AD

27.04

1

27.04

71.07

<0.0001

 

BC

33.64

1

33.64

88.42

<0.0001

 

BD

 

1

 

0.026

0.8734

 

CD

23.52

1

23.52

61.82

<0.0001

 

A2

36.28

1

36.28

69.08

<0.0001

 

B2

23.32

1

23.32

58.66

<0.0001

 

C2

206.85

1

206.85

543.65

<0.0001

 

D2

27.12

1

27.12

71.27

<0.0001

 

Residual

5.71

15

0.38

   

Lack of fit

3.37

10

0.34

0.72

0.6909

Not significant

Pure error

2.33

5

0.47

   

Correlated total

2,486.27

29

    
  1. R2 0.9977; adjusted R2 0.9956; predicted R2 0.9923.