The table below presents the scores of 10 states on each of six variables, which are three measures of criminal activity as dependent variables and three possible independent variables: unemployment rate, education, and poverty. Crime rates are the number of incidents per 100,000 population.
For each combination of crime rate and the three independent variables:
a. Draw a scattergram and a freehand regression line.
b. Compute the slope (b) and then find the Y intercept (a).
c. State the least-squares regression line. What homicide rate would you predict for a state with a poverty rate of 15? What robbery rate would you predict for a state where the percentage of high school graduates was 75? What auto theft rate would you predict for a state in which 12% of the population was unemployed?
d. Compute r and r2.
e. Describe the strength and direction of each of these relationships in a sentence or two.

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Crime Rates, 2009 Independent Variables % Families in Poverty, 96 HS Grads, % Unemployed, 42 State Homicide Robbery Car Maine New York Ohio owa 2010 30 144 154 210 132 135 153 136 100 173 112 198 129 10 10 6 10 90 12 13 12 13 81 10 81 90 10 141 HES Kentucky Louisiana 12 Washington3 California 443 10