Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a categorical independent variable with three possible levels (level 1, level 2, and level 3). (i) How many dummy variables are required to represent the categorical variable? (ii) Write a multiple regression equation relating x1, and the categorical variable to y.
Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a categorical independent variable with three possible levels (level 1, level 2, and level 3). (i) How many dummy variables are required to represent the categorical variable? (ii) Write a multiple regression equation relating x1, and the categorical variable to y.
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
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Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a categorical independent variable with three possible levels (level 1, level 2, and level 3).
(i) How many dummy variables are required to represent the categorical variable?
(ii) Write a multiple regression equation relating x1, and the categorical variable to y.
PLEASE SHOW ALL HAND WRITTEN STEPS AND DO NOT USE EXCEL OR ANY SOFTWARE
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