For which of the following pairs of variables would it be appropriate to calcula

Question

For which of the following pairs of variables would it be appropriate to calculate the correlation coefficient (r)? A. Time spent studying for the final exam and score on the exam for STAT 241/251 students. B. Political party affiliation of STAT 241/251 students and whether they voted in the previous Alma Mater Society (AMS) elections. C. Cell phone brand and monthly cell phone charges for phones used by STAT 241/251 students. D. Income of student and the name of the company that employs them, for STAT 241/251 students who work part time.

Explanation / Answer

Answer to this question should be option A. Since time studying for an test and score on test of the student is highly correlated.

C. and D. might not have any relation while political party affiliation of students does not affect who they voted for the previous elections.

So it would be appropriate to calculate the correlation coefficient of option A.

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