Which of the following statements are true?
A) The forward selection method, an alternative to the backward elimination method, starts with no predictors in the model and consider fitting in turn the model with only $x _ { 1 }$
, only $x _ { 2 }$
,…)., and finally only $x _ { m }$
)
B) The stepwise procedure most widely used is a combination of forward selection (FS) method and backward elimination (BE) method.
C) The stepwise procedure starts by adding variables to the model, but after each addition it examines those variables previously entered to see whether any is a candidate for elimination.
D) All of the above statements are true.
E) None of the above statements are true.

Question

Quizplus · Accepted Answer

All the statements provided accurately describe common methods used in statistical modeling for variable selection. Statement A describes the forward selection method, which indeed starts with no predictors and adds them one by one based on certain criteria. Statement B correctly identifies the stepwise procedure as a widely used method that combines aspects of both forward selection and backward elimination. Statement C accurately describes the process of the stepwise procedure, where after adding a new variable, it reassesses all variables in the model to determine if any should be removed.

Which of the Following Statements Are True? A) the Forward x1x _ { 1 }x1​

Which of the Following Statements Are True?
A) the Forward $x _ { 1 }$