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Re: st: Troubleshooting comparison of means across groups
From
Maarten Buis <[email protected]>
To
[email protected]
Subject
Re: st: Troubleshooting comparison of means across groups
Date
Thu, 28 Jun 2012 16:18:29 +0200
On Thu, Jun 28, 2012 at 4:12 PM, Kerry MacQuarrie wrote:
> If I run the code ttest varname by(groupvar), I get: "factor variables and
> time-series operators not allowed".
You forgot the comma between varname and by(). -by()- is an option, so
it has to appear after the comma.
-- Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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