A history instructor has given the same pretest and the same

A history instructor has given the same pretest and the same final examination each semester. He is interested in determining if there is a relationship between the scores of the two tests. He computes the linear correlation coefficient and notes that it is 1.15. what does this correlation coefficient value tell the instructor?

Solution

The Linear correlation Coefficient helps us to determine if theres a strong bond between two variables, in other words it measures the linear association, and the values of the linear correlation coefficient (r) goes from -1 to 1
Where 1 is a perfect linear correlation.

So with a value of 1.15. the anwser is

C) The history instructor has made a computational error