A graduate school committee is studying the relationship between x = an applicants' undergraduate grade point average and y = the applicants' score on the graduate entrance exam. The following random sample was collected to study this relationship.
x (GPA)
|
3.2
|
3.9
|
4.0
|
3.4
|
3.7
|
3.0
|
y (score)
|
725
|
788
|
775
|
647
|
800
|
672
|
Based on a scatter diagram, would you estimate the linear correlation coefficient to be:
(a) close to -1
(b) closer to 0 and negative
(c) close to 1
(d) closer to 0 and positive
(e) cannot determine