33. Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a
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33. Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a qualitative independent variable with three possible levels (level 1, level 2, and level 3).
a. How many dummy variables are required to represent the qualitative variable?
b. Write a multiple regression equation relating x1 and the qualitative variable to y.
c. Interpret the parameters in your regression equation.
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Related Book For 
Essentials Of Statistics For Business And Economics
ISBN: 9780324568608
5th Edition
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
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