solution

In a large introductory sociology course, a professor gives two exams. The professor wants to det ermine whether t he scores students receive on t he second exam are correlated with t heir scores on t he First exam. To make the calculations easier, a sample of eight students is selected. Their scores are shown in the accompanying table.

a. Construct a scatter plot of t he data, using exam 1 score a s t he X variable. Does t he relationship look linear?

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b. Assuming a linear relationship exists between scores on t he two exams, compute t he value for Pearson r.

c. How w ell does t here lationship account f or t he scores on exam 2? Education

 
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