Is the amount of violent crime related to what police officers are paid? The data file holds data for each state of the United States. The variables are:

Violent Crime (crimes per 100,000 population)
Police Officer Pay (mean $)
High School 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 High School Graduation Rate, what would the R2 of that regression be?