Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2008 by Universidad Católica de Valparaíso -- Chile
Vol. 11 No. 4, Issue of October 15, 2008
 

Table 2. Statistical analysis of obtained results.


Statistical Parameters

Effluent Soluble COD (mg/L)

Run 1

Run 2

Run 3

Run 4

Mean

17.8

13.2

31.4

74.8

95% Confidence Interval for Mean

Lower Bound

13.3

9.7

28.8

59.1

Upper Bound

22.3

16.7

34.0

90.5

Median

16.0

14.0

30.5

79.5

Variance

39.1

23.3

12.9

482.0

Std. Deviation

6.3

4.8

3.6

22.0

Minimum

11.0

7.0

28.0

45.0

Maximum

32.0

21.0

39.0

114.0

Statistical Parameters

Effluent Ammonium-N (mg/L)

Run 1

Run 2

Run 3

Run 4

Mean

0.72

1.47

6.61

8.80

95% Confidence Interval for Mean

Lower Bound

0.64

1.26

6.34

8.56

Upper Bound

0.80

1.67

6.87

9.04

Median

0.73

1.40

6.55

8.72

Variance

0.01

0.04

0.06

0.05

Std. Deviation

0.07

0.20

0.25

0.23

Minimum

0.63

1.30

6.30

8.60

Maximum

0.80

1.80

7.00

9.20


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