Question: =8. When using dummy variables in a regression equation to model a qualitative or categorical variable, the number of dummy variables should equal a. the

=8. When using dummy variables in a regression equation to model a qualitative or categorical variable, the number of dummy variables should equal

a. the number of categories.

b. 1 more than the number of categories.

c. 1 less than the number of categories.

d. the number of other independent variables in the model.

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