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Table 6 Analysis of variance of the model for carotenoids production

From: Effects of nutritional conditions on growth and biochemical composition of Tetraselmis sp.

Source

Sum of squares

df

Mean square

F value

P value

x 1

0.0008

1

0.0008

6.25

0.12

x 2

0.02

1

0.02

188.48

<0.05

x 3

0.003

1

0.003

25

<0.05

x 4

0.014

1

0.014

105.06

<0.05

x 1 x 2

0.004

1

0.004

31.68

<0.05

x 1 x 3

0.0002

1

0.0002

1.68

0.32

x 1 x 4

0.0001

1

0.0001

0.75

0.47

x 2 x 3

0.01

1

0.01

75.00

<0.05

x 2 x 4

0.001

1

0.001

12.00

0.07

x 3 x 4

0.0006

1

0.0006

4.68

0.16

x 1 2

0.005

1

0.005

43.34

<0.05

x 2 2

0.002

1

0.002

21.77

<0.05

x 3 2

0.005

1

0.005

41.17

<0.05

x 4 2

0.0003

1

0.0003

2.77

0.23

Lack of fit

0.005

10

0.0005

3.89

0.22

Pure error

0.0002

2

0.0001

  

Total

0.10

26

   
  1. R2 = 0.95