Question

Suppose we calculate the least-squares regression lines for two sets of paired data. The first set has a regression line with slope m1 and correlation coefficient r1, while the second set has a regression line with slope m2 and correlation coefficient r2. If r1 < 0 < r2, we can correctly conclude that..

A) m1 < 0 < m2
B) r12 < 0 < r22
C) the first set displays stronger correlation than the second.
D) the second set displays stronger correlation than the first.