Question

In: Statistics and Probability

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

5

61
5 55
8 65.2
8 59.2
10 67
11 65.4
15 84
18 94.2
18 100
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 9 hours each week on math? Grade = Round to 1 decimal place.

Solutions

Expert Solution

The regression equation is y = 3.07x + 38.87

Predicted value for the final grade when a student spends an average of 9 hours each week = 3.07*9 + 38.87 = 66.5


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