Fit the model Y = βx + ?to the chloride concentration

Fit the model = β+ ?to the chloride concentration-roadway area data An article in the Journal of Environmental

Engineering reported the results of a study on the occurrence of sodium and chloride in surface streams in central Rhode Island. The following data are chloride concentration (in milligrams per liter) and roadway area in the watershed (in percentage). Plot the fitted model on a scatter diagram of the data and comment on the appropriateness of the model.

y

4.4

6.6

9.7

10.6

10.8

10.9

x

0.19

0.15

0.57

0.70

0.67

0.63

 

y

11.8

12.1

14.3

14.7

15.0

17.3

x

0.47

0.70

0.60

0.78

0.81

0.78

 

y

19.2

23.1

27.4

27.7

31.8

39.5

x

0.69

1.30

1.05

1.06

1.74

1.62

 

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