Question: Question Two A random sample of 10 U.S. cities was selected and a regression of crime rate (per 1000) as a function of population density

Question Two

A random sample of 10 U.S. cities was selected and a regression of crime rate (per 1000) as a function of population density (i.e., inhabitants per square mile) was calculated yielding the following equation:

= .7 + .5 X

The density variable ranged from a low of 10 people per square mile in Kansas City to a high of 100 in Chicago. The crime rate ranged from 5 to 48.

Could I get some assistance with these three questions?

C) What assumption was made about the form of the relationship between crime and population density in order to calculate this regression equation?

D) r-squared for the example is .81. What does this mean?

E) What is Pearson's r? (Calculate it!)

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