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1. A variable that takes on the values of 0 or 1 and is used to incorporate the effect of categorical variables in a regressi

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1. Dummy variable is used by taking the value 0 or 1 to incorporate the effect of a categorical variable

C) A dummy variable

2. The adjusted multiple coefficients of determination adjust the number of independent variables.

B) the number of independent variables

3. Z = X1X2 is called an interaction effect.

B) Interaction

4. F test is used to determine whether one additional variable makes a significant contribution to a multiple regression model.

C) An F test

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