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st: Troubleshooting comparison of means across groups
From
"Kerry MacQuarrie" <[email protected]>
To
<[email protected]>
Subject
st: Troubleshooting comparison of means across groups
Date
Thu, 28 Jun 2012 10:12:47 -0400
Hi all,
I am trying to run t tests to compare means of some (continuous) variables
across groups. However, I'm running in to some puzzling error messages.
If I run the code ttest varname by(groupvar), I get: "factor variables and
time-series operators not allowed". Any ideas on where to start looking to
troubleshoot this?
Thanks for any suggestions.
Kerry
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Kerry MacQuarrie
NSF Fellow and CSDE Trainee
Sociology Department
University of Washington
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