Fit the modelY= βx+ ?to the chloride concentration-roadway area data An article in theJournal of Environmental
Engineeringreported the results of a study on the occurrence of sodium and chloride in surface streams in central Rhode Island. The following data are chloride concentrationy(in milligrams per liter) and roadway area in the watershedx(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
11.8
12.1
14.3
14.7
15.0
17.3
0.47
0.60
0.78
0.81
19.2
23.1
27.4
27.7
31.8
39.5
0.69
1.30
1.05
1.06
1.74
1.62
24/9/2014
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