A researcher is interested in the association between (X) people’s attitudes toward the war in Afghanistan and (Y) how much they support Barack Obama. In March 2009, she takes a random sample of American adults and collects the following data (both variables being measured on a scale from 1 to 9, with 9 representing strongest support):
a. Draw a scatter plot of the data.
b. Calculate the regression slope and Y-intercept.
c. Draw the regression line on the scatter plot.
d. Predict the attitude toward President Bush of someone who scores a 3 on their attitude toward the war.
e. Find the coefficients of determination and non-determination. What do they mean?

  • CreatedOctober 29, 2015
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