Calculating the correlation coefficient for the following data
A researcher chooses a random sample of college students and measures the number of hours they spend watching television per week and their grade point average. The results are as follows:
|
|
X
|
Y
|
|
Subject #
|
TV hours
|
GPA
|
|
1
|
50
|
1.90
|
|
2
|
20
|
2.20
|
|
3
|
19
|
2.40
|
|
4
|
10
|
3.30
|
|
5
|
7
|
2.90
|
|
6
|
15
|
2.50
|
|
7
|
5
|
3.50
|
|
8
|
40
|
1.95
|
|
9
|
30
|
2.00
|
|
10
|
2
|
3.90
|
Compute the correlation coefficient and prediction equation.