I don't understand question 3 in the "Regression Models using Enterprise Miner" Lecture

[Xerun]

Question - 

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?

I would argue that the Backwards & Stepwise methods do these things. And yet the answer is none. I don't understand why.

Additionally I had a lot of issues with the questions in this topic, is there anywhere I can get further information on this topic?

[TheresaStemler]

Hi Xerun,

hang tight ... I'm working on getting you some help.