I was thinking about producing some graphs to get closer to the meanings,
so I tried to produce three graphs (one for normal regression, one for the xtmixed slopes and one for the xtmixed intercepts),
and after that I would like to combine them.
So, for the normal regression graph I tried to collect information about the intercept and the slope
using statsby command:
statsby inter=_b(_cons) slope=_b(intrinsicJC), by(countries) clear: ///
reg JS intrinsicJC
Stata told me that _b is unknown command!
But the command at all should work, as reported from my professor...
What's wrong?
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