Use software with the Crime2 data file at the text website, with murder rate (number of murders per 100,000 people) as the response variable and with percentage of high school graduates and the poverty rate as explanatory variables.

(a) Construct the partial regression plots. Interpret. Do you see any unusual observations?

(b) Report the prediction equation. Explain how to interpret the estimated coefficients.

(c) Redo the analyses after deleting the D.C. observation.

Describe the influence of this observation on the predicted effect of poverty rate.What does this tell you about how influential outliers can be?