Question: Dummy variables are used in multiple regression to A. Test the significance of a nuisance variable B. Estimate the intercept C. Model the effect of
Dummy variables are used in multiple regression to
| A. | Test the significance of a nuisance variable | |
| B. | Estimate the intercept | |
| C. | Model the effect of an independent variable that is nominal or ordinal | |
| D. | Model the interaction effect between two independent variables |
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