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 television | GPA |
|---|
| 0 | 4.0 |
| 6 | 4.0 |
| 7 | 3.8 |
| 8 | 2.5 |
| 9 | 3.6 |
| 10 | 3.5 |
| 10 | 3.9 |
| 12 | 3.7 |
| 15 | 3.2 |
| 20 | 3.0 |
| 22 | 2.5 |
| 25 | 2.2 |
| 30 | 2.7 |
| 33 | 2.4 |
| 35 | 1.8 |
| 39 | 1.5 |
| 44 | 2.1 |
- _______ Calculate the slope of the linear regression for the data.
- _______ Calculate the y-intercept of the linear regression.
- _______ Is the correlation positive or negative?
- _______ What is the predicted grade point average for a student who watches 18 hours of television per week?
- _______ What is the predicted number of hours of television watched by a student with a GPA of 2.0?
- _______ Calculate the linear correlation coefficient r for the data.
- _______ Is the correlation none, low, moderate, high, or perfect?
- _______ Calculate the coefficient of determination.
- _______ What percent of the variation in the hours of television accounts for the
variation in the GPA data?
- _______ What is the predicted number of hours of television watched by a student with a GPA of 0.5?