Setting sample size in a pooled panel

[rockerbie]

I have 30 cross section units each with annual observations of a variable called X over the period 2002 to 2008. I would like to set the sample so that only the cross-section observations for each year that are above the average value of X for each year are included. I would seem to need to enter multiple lines in the sample window, but I just don't know.

[EViews Gareth]

Code: Select all

smpl if X>@meansby(X,@obsid)

I think.