In the Exam 4 data file, you will also find another worksheet labeled 'Spurious Relationships.' I've told you that you can't infer causality from correlations but to hopefully drive that point home even further lets look at some correlations that are likely due to a third variable (population density) that is affecting our relationship from behind the scenes. The data on this worksheet is from 2008. What is r for the correlation between percentage of the adult population that graduated from college (Coll Grad) and vehicle theft rate (VehTheft)?

Hint: use VehTheft as Y and Coll Grad as X.

A. .54
B. .36
C. .13
D. .42