#### MS 150 Statistic Quiz 4 Fall 2004

The data in the table records the number of hours of television watched per week and the GPA for seventeen students.

Hours of televisionGPA
04.0
64.0
73.8
82.5
93.6
103.5
103.9
123.7
153.2
203.0
222.5
252.2
302.7
332.4
351.8
391.5
442.1
1. _______ Calculate the slope of the linear regression for the data.
2. _______ Calculate the y-intercept of the linear regression.
3. _______ Is the correlation positive or negative?
4. _______ What is the predicted grade point average for a student who watches 18 hours of television per week?
5. _______ What is the predicted number of hours of television watched by a student with a GPA of 2.0?
6. _______ Calculate the linear correlation coefficient r for the data.
7. _______ Is the correlation none, low, moderate, high, or perfect?
8. _______ Calculate the coefficient of determination.
9. _______ What percent of the variation in the hours of television accounts for the variation in the GPA data?
10. _______ What is the predicted number of hours of television watched by a student with a GPA of 0.5?