Police salaries. Is the amount of violent crime related to what police officers are paid? The U.S. Bureau of Labor Statistics publishes data on occupational employment and wage estimates (www.bls.gov/oes/). Here are data on those states for which 2006 data were available. The variables are:

Violent Crime (crimes per 100,000 population)

Police Officer Wage (mean $/hr)

Graduation Rate (%)

One natural question to ask of these data is how police officer wages are related to violent crime across these states.

First, here are plots and background information.

a) Name and check (to the extent possible) the regression assumptions and their corresponding conditions.

b) If we found a regression to predict Violent Crime just from Police Officer Wage, what would the R2 of that regression be?

Transcribed Image Text:

Violent Crime 800 600 200 + + 52.5 60.0 67.5 75.0 Graduation Rate 800 600 400 200 + 15 20 25 30 Police Officer Wage Correlations Violent Graduation Police Officer Crime Rate Wage Violent Crime 1.000 Graduation Rate -0.682 1.000 Police Officer Wage 0.103 0.213 1.000