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st: Graphics with averages of variables (over other variables)


From   oezguer.guererk@uni-erfurt.de
To   statalist@hsphsun2.harvard.edu
Subject   st: Graphics with averages of variables (over other variables)
Date   Wed, 10 Jun 2009 12:56:11 +0200

Hello,

I would like to create "twoway connected" graphics of a variable called "myredpts" on the Y-axis and the variable "period" on the X-axis. "myredpts", however, should be averaged over several "subjects" belonging to the same "group", for each "period".

I use the command: "twoway (connected mean(myredpts) period) if treatment == 1, by(group)" which is apparently wrong because of the "mean"... If I skip mean and use only "twoway (connected myredpts period) if treatment == 1, by(group)" then stata draws in each period several points for several subjects and connects them, I, however, want Stata to draw only one single data point for each group consisting of 4 subjects in each period and connect these for the consecutive 20 periods.

Thank you very much for your help!
Ozgur

--
Dr. Özgür Gürerk

Lehrstuhl für Mikroökonomie & Laboratorium für experimentelle Wirtschaftsforschung
(Microeconomics & Laboratory for Experimental Economics)

Universität Erfurt, Nordhäuser Str. 63, D-99089 Erfurt
Tel: +49 361 7374561
Fax: +49 361 7374569
www.uni-erfurt.de/elab
--

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