The scatterplots show data relating tree cover and median income in different neighborhoods of
Philadelphia and Detroit. The r-value for Philadelphia's data is r = 0.406
a. Which option could be the r-value for Detroit? Justify your answer.
r = 0.35
r=0.85
r=0.35
r=-0.85

b. Use the r-values to compare the relationships
between tree cover and median income in
Philadelphia and Detroit.