Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a categorical independ
ent variable with three possible levels (level 1, level 2, and level 3).
1) How many dummy variables are required to represent the categorical variable?
2.) Write a multiple regression equation relating x1 and the categorical variable to y.
3) interpret the parameters in your regression equation.
1) How many dummy variables are required to represent the categorical variable?
2.) Write a multiple regression equation relating x1 and the categorical variable to y.
3) interpret the parameters in your regression equation.
1 answer:
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