MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A business statistics professor would like to develop a regression model to predict the exam scores for students based on their current GPAs, the number of hours they studied for the exam, and the number of times they were absent during the semester. The data for these variables can be found in this file.
a) Run the multiple regression in Excel. Hint: set x1 = GPA, x2 = Hours, X3 = Absences.
b) Find the R2 and explain its meaning.
c) Explain the outcome of the F test. What does it mean?
d) Explain the outcomes of the t tests for the slope coefficients.
e) Write out the regression equation.
f) Explain the meanings of the slope coefficients.
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