A Feb 2008, how would the correlation change reported a study on the distance students lived from campus and average GPA. Here is a summary of the result.
Residence / Avg. GPA
Residence hall / 3.33
Walking distance / 3.16
Near campus, long walk or short drive / 3.12
Within the county not near campus / 2.97
Outside the county / 2.94
Q1: Base on these data is the association between the distance a student lives from campus and average GPA positive, negative or near 0?
Q2: Would the association be stronger, weaker, or the same if the data given listed the GPA of individual students (rather than averages) and the distance they lived from campus?
My answer for the Q1 is negative because if the distance a student lived shorter, the GPA gets higher. However, I have no idea for Q2. Anybody can help me? Thanks!