A random group of 12 high school juniors were asked to estimate the average number of hours they study each week. The following give these hours along with the student's grade point average.
|
Hours
|
GPA
|
|
6
|
2.8
|
|
14
|
3.2
|
|
3
|
3.1
|
|
22
|
3.6
|
|
9
|
3.0
|
|
11
|
3.3
|
|
12
|
3.4
|
|
5
|
2.7
|
|
18
|
3.1
|
|
24
|
3.8
|
|
15
|
3.0
|
|
17
|
3.9
|
Find the sample correlation coefficient between hours reported and GPA.