Table 9 Results of the regression analysis of monthly water cost paid by GSU users

Constant

−32.40

−.985

 District-D1

−14.97

−3.957^***

 District-D2

−13.72

−3.329^***

 District-D3

−15.16

−3.749^***

 Ln (family number)

5.77

.631

 Ln (income)

2.93

.656

 Occupation

0.25

.082

 Sex

−0.36

−.120

 Ln (age)

18.62

1.583

 Education-D1

−1.03

−.241

 Education-D2

0.10

.030

 Residence-D1

4.49

1.999^**

 Residence-D2

10.19

2.194^**

 Residence-D3

3.91

.823

0.214

4.134 (sig = .0000)