EViews.com

Hello

I have a couple of simple questions regarding model specifications. It seems my EViews version was updated to no. 10 (I think) and I noticed some differences in the models spec. When I enter the model spec in the Equation window and click on the Estimation settings window, I see "LS - Least Squares (NLS and ARMA) as the first option. I believe there used to be simple OLS in the place of NLS in the previous versions, correct? So how do I now estimated simple OLS model?

And second, when would one want to use ROBUSTLS option from the Settings list? Thanks very much!!

OLS is covered by the LS option.

If you specify a non-linear model, NLS will be used. If you specify a linear model, OLS will be used.

Thank you! How about ROBUSTLS option? When would this one be used? In the case of a linear model, what is the advantage of using this option?

And a related question: in the Binary estimation settings, how do I know when to use "extreme values" model and if it would be preferred to Probit and Logit specifications. Thank you.