Question
Run a regression analysis on the following data set, where yis the final grade in a...
Run a regression analysis on the following data set, where yis the final grade in a math class and xis the average number of hours the student spent working on math each week.
| hours/week x |
Grade y |
|---|---|
| 5 | 53 |
| 5 | 50 |
| 8 | 60.2 |
| 9 | 60.6 |
| 9 | 68.6 |
| 10 | 68 |
| 11 | 64.4 |
| 11 | 71.4 |
| 20 | 100 |
| 20 | 100 |
State the regression equation y=m⋅x+b, with constants accurate to
two decimal places.
What is the predicted value for the final grade when a student
spends an average of 11 hours each week on math?
Grade = Round to 1 decimal place.
Homework Answers
Answer #1
The statistical software output for this problem is:
Hence,
Regression equation will be:
y = 3.24 x + 34.67
Predicted value of final grade = 70.3
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