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Table 3 The Mean, variance (s2) and coefficient of dispersion (CD) of the densities of An. arabiensis larvae collected from each paddy.

From: Survival of immature Anopheles arabiensis (Diptera: Culicidae) in aquatic habitats in Mwea rice irrigation scheme, central Kenya

Paddy number

Early instars

Late instars

Pupae

A

Mean

1.18

0.34

0.05

 

Variance

2.57

0.44

0.07

 

CD

2.18

1.27

1.46

B

Mean

0.94

0.23

0.01

 

Variance

1.00

0.96

0.03

 

CD

1.07

4.12

4.62

C

Mean

6.20

0.96

0.75

 

Variance

78.34

1.76

2.50

 

CD

12.63

1.83

3.32

D

Mean

3.90

1.02

0.25

 

Variance

34.32

1.85

1.31

 

CD

8.81

1.81

5.30

F

Mean

1.33

0.17

0.11

 

Variance

4.76

0.75

0.15

 

CD

3.57

4.48

1.30

Total

Mean

2.71

0.55

0.23

 

Variance

27.06

0.93

0.60

 

CD

9.99

1.71

2.56