Run a regression analysis on the following data set, where y is the final grade in...
Run a regression analysis on the following data set, where y is the final grade in a math class and x is the average number of hours the student spent working on math each week. hours/week x Grade y
x y
| 4 | 40.6 |
| 6 | 62.4 |
| 7 | 68.8 |
| 8 | 70.2 |
| 10 | 76 |
| 11 | 82.4 |
| 13 | 77.2 |
| 14 | 79.6 |
| 15 | 96 |
| 19 | 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 9 hours each week on math?
Grade = __________Round to 1 decimal place.
Homework Answers
We can use here Excel for regression equation
Step 1) Enter data in Excel .
Step 2) Data >>Data analysis >>Regression >>Select y and x values separately >>Ok
| y=3.36x+39.38 |
Substitute x=9
=> y=3.36(9)+39.38
=69.6
| Grade = 69.6 |
Add Answer to:
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You run a regression analysis on a bivariate set of data ( n =
41 ). With ¯ x = 41.6 and ¯ y = 31.1 , you obtain the regression
equation y = − 2.748 x + 61.522 with a correlation coefficient of r
= − 0.011 . You want to predict what value (on average) for the
response variable will be obtained from a value of 10 as the
explanatory variable. What is the predicted response value?
You...
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