Hi,
I have a question regarding Lesson 5 Regression Models Using SAS Enterprise Miner quiz question nr. 3 (see below). If I understand correctly, if you choose 'none' then non significant variables are not removed? So why is the correct answer d?
Best regards,
Koen
Which of the following sequential selection methods do you use so that SAS Enterprise Miner will look at all variables already included in the model and delete any variable that is not significant at the specified level?
a. Backward b. Forward c. Stepwise d. None
Your answer: a Correct answer: d
The stepwise selection method compares each variable to the previous variable entered and based on a specified level, one variable is considered more significant than the other.