Which of the following statements about stepwise regression is true?
A)It uses only 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 selects the independent variable with the weakest correlation first.

Question

Quizplus · Accepted Answer

Stepwise regression is a method that iteratively adds or removes independent variables in a step-by-step manner based on their statistical significance in improving the regression model's accuracy. It starts with a single independent variable and adds more variables that significantly improve the model's fit. It stops when no more significant variables can be added or when some preset stopping criteria are met. Therefore, option C is the correct statement about stepwise regression.

Which of the Following Statements About Stepwise Regression Is True