Variable

Observations

Obs. with missing data

Obs. without missing data

Minimum

Maximum

Mean

Std. deviation

Dia

93

0

93

1.000

16.000

5.011

3.255

Age

93

0

93

5.000

60.000

29.194

18.212

Sand

93

0

93

0.000

1.000

0.946

0.227

Clay

93

0

93

0.000

1.000

0.054

0.227

Low Traffic

93

0

93

0.000

2.000

0.968

0.231

Heavy Traffic

93

0

93

0.000

1.000

0.043

0.204

Trees

93

0

93

0.000

1.000

0.903

0.297

no trees

93

0

93

0.000

1.000

0.215

0.413

shallow unde 6

93

0

93

0.000

1.000

0.849

0.360

deep bury

93

0

93

0.000

1.000

0.032

0.178

pressure

93

0

93

55.000

65.000

55.323

1.616

Ductile

93

0

93

0.000

1.000

0.419

0.496

GI

93

0

93

0.000

1.000

0.054

0.227

PVC

93

0

93

0.000

1.000

0.247

0.434

AC

93

0

93

0.000

1.000

0.065

0.247

HDPE

93

0

93

0.000

5.000

1.075

2.065