Determining which variables to include in regression analysis by estimating a series of regression equations by successively adding or deleting variables according to prescribed rules is referred to as:
A) elimination regression
B) forward regression
C) backward regression
D) stepwise regression

Question

Quizplus · Accepted Answer

Stepwise regression is the process of identifying the most relevant variables by testing and examining the statistical significance of each variable and their combinations. It starts with all potential variables and then removes or adds them one by one based on their p-values and contribution to the model's prediction. This method is considered more efficient and accurate than forward or backward regression, which only add or remove variables based on their individual significance.

Determining Which Variables to Include in Regression Analysis by Estimating