What is a multiple regression equation? (Select all that apply.)
a. One that represents the mathematical effect that several independent variables have on the dependent variable
b. One in which the x-values are multiplied by one another
c. One that explains more of the variance in y than does a single linear regression equation
d. An experimental model for determining best practices
e. One that uses more than one predictor variable to predict the value of the outcome variable
f. One that explains all of the variance in the dependent variable, in terms of several independent variables
ANS: A, C, E
Multiple regression is an extension of simple linear regression in which more than one independent variable is entered into the analysis. Because the relationships between multiple predictors and y are tested simultaneously, the calculations involved in multiple regression analysis are very complex. Multiple regression is best conducted using a statistical software package. A multiple regression formula explains some or all of the variance in the dependent variable; it cannot explain all of it.
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