For each of the following, state whether you would expect the Pearson r correlation between X and Y to be positive, zero, or negative.
Assume that each correlation is based on a sample of 50 participants who have scores on both X and Y.
a. X=grades in high school advanced placement psychology course, Y= scores on the advanced placement psychology test
b. X= intelligence, Y= size of big toe on right foot.
c. X= number of years spent playing golf, Y= average golf score per 18 holes
d. X=number of hours spent watching television per week, Y=grades in high school
e X= self-esteem (low number indicated low self-esteem), Y= depression (low number indicates more depressed).
f. X= number of hours spent studying for a test, Y= number of mistakes made on that test.