Run a regression analysis on the following data set, where yy is the final grade in a math class and xx is the average number of hours the student spent working on math each week.
hours/week x |
Grade y |
---|---|
7 | 65.8 |
8 | 65.2 |
9 | 58.6 |
10 | 76 |
11 | 77.4 |
11 | 64.4 |
13 | 70.2 |
16 | 98.4 |
17 | 91.8 |
19 | 100 |
State the regression equation y=m⋅x+by=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 12 hours each week on math?
Grade = Round to 1 decimal place.
from above:
Regression equation :y^=3.31x+36.70
b)
predicted value for the final grade =3.31*12+36.70 = 76.4
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