When Dr Pressley Examines the Study Habits of His Students He

Multiple Choice

When Dr. Pressley examines the study habits of his students he finds that as the number of hours they spend studying increases, so do their grades. He finds an even stronger correlation between partying and grades in that as their grades improve the number of hours they spend partying decreases. When he runs the statistics on these data he finds which of the following correlation coefficients for hours studying with grades and hours partying with grades respectively

A) +0.34; -0.63
B) -0.34; +0.63
C) +0.63; -0.34
D) -0.63; +0.34