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Table 4 ANOVA Table obtained from the analysis of the variation of mean physicochemical characteristics between the two cluster groups. Difference is significant when p < 0.05

From: The impact of sewage effluents on water quality of Lake Hawassa, Ethiopia

  

Sum of Squares

df

Mean Square

F

p

EC

Between Groups

196812.85

1

196812.85

468383.37

0.00

 

Within Groups

14.29

34

0.42

  

Turbidity

Between Groups

1062.77

1

1062.77

66.32

0.00

 

Within Groups

544.89

34

16.03

  

T

Between Groups

48.27

1

48.27

51.50

0.00

 

Within Groups

31.86

34

0.94

  

TDS

Between Groups

26932.69

1

26932.69

1401.54

0.00

 

Within Groups

653.36

34

19.22

  

pH

Between Groups

29.66

1

29.66

3835.25

0.00

 

Within Groups

0.26

34

0.01

  

Fe

Between Groups

0.14

1

0.14

344.12

0.00

 

Within Groups

0.01

34

0.00

  

Mn

Between Groups

0.98

1

0.98

72.49

0.00

 

Within Groups

0.46

34

0.01

  

Cr

Between Groups

0.00

1

0.00

4.13

0.05

 

Within Groups

0.00

34

0.00

  

Cu

Between Groups

0.08

1

0.08

4.79

0.04

 

Within Groups

0.56

34

0.02

  

K

Between Groups

357.52

1

357.52

7.09

0.01

 

Within Groups

1714.67

34

50.43

  

Fluoride

Between Groups

22.41

1

22.41

16.28

0.00

 

Within Groups

46.82

34

1.38

  

Nitrite

Between Groups

0.00

1

0.00

1.54

0.22

 

Within Groups

0.00

34

0.00

  

Nitrate

Between Groups

10243.36

1

10243.36

12.65

0.00

 

Within Groups

27532.91

34

809.79

  

Sulfate

Between Groups

511.78

1

511.78

14.95

0.00

 

Within Groups

1163.98

34

34.24

  

Phosphate

Between Groups

0.09

1

0.09

70.11

0.00

 

Within Groups

0.05

34

0.00