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?