The article Air Pollution and Medical Care Use by Older Americans(Health Affairs [ 2002]: 207 214) gave

The article €œAir Pollution and Medical Care Use by Older Americans€(Health Affairs [ 2002]: 207€“ 214) gave data on a measure of pollution (in micrograms of particulate matter per cubic meter of air) and the cost of medical care per person over age 65 for six geographical regions of the United States:
a. Construct a scatterplot for these data.
b. Compute and interpret the value of the correlation coefficient.
c. Write a few sentences summarizing what the scatterplot and value of the correlation coefficient tell you about the relationship between pollution and medical cost per person over age 65.

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Cost of Region North Upper South Deep South West South Big Sky Pollution 30.0 31.8 32.1 26.8 30.4 40.0 Medical Care 915 891 968 972 952 899