Which of the following statements about stepwise regression is true?
A) It only uses dependent variables and adds them one by one.
B) It uses independent variables with insignificant regression coefficients.
C) It is a step-by-step method that adds independent variables one by one in order to build a more efficient regression equation.
D) It first selects the independent variable with the weakest correlation first.

Question

Quizplus · Accepted Answer

Stepwise regression is a method of regression analysis in which a step-by-step process is used to identify the independent variables that contribute significantly to improve the accuracy of the regression model. It can be used for both forward selection (adding independent variables one by one) and backward elimination (removing independent variables one by one). Stepwise regression differs from other regression methods in that it adjusts for multiple comparisons and can lead to more efficient models. It is not limited to only using dependent variables or selecting independent variables with insignificant regression coefficients, nor does it prioritize selecting the independent variable with the weakest correlation first.

Which of the Following Statements About Stepwise Regression Is True