After gaining enough experience to advance through a first salary schedule (A), police officers at the Los Angeles Police Department are paid annual salaries as described in Table 76 (Schedule 2). As police officers gain more experience, they receive step increases.

Let s be the annual salary (in dollars) for step n.
a. Construct a scatterplot by hand.
b. Describe the four characteristics of the association. Compute and interpret r as part of your analysis.
c. Draw a linear model on your scatterplot.
d. Predict the salary at step 5. Have you performed interpolation or extrapolation? Do you have much faith in your result?
e. Suppose police officers negotiated adding Step 8 to Schedule 2. Predict the annual salary at Step 8. Have you performed interpolation or extrapolation? Do you have much faith in your result?

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Table 76 Steps versus Annual Salaries Schedule 2) Annual Salary dollars) Step 67,442 1.243 75,168 83,791 88.427