For a sample of 41 New England cities, a sociologist studies the crime rate in each city (crimes per 100,000 residents) as a function of its poverty rate (in %) and its median income (in $1,000s). A portion of the regression results are shown.
a. Calculate the standard error of the estimate. Given that the mean crime rate for this sample is 597, calculate and interpret Se/
b. What proportion of the variability in crime rate is explained by the variability in the explanatory variables? What proportion is unexplained?