You could try Summarize in the NCStats package, or aggregate in the
epicalc package.
Andrew Miles
Department of Sociology
Duke University
On Jul 6, 2010, at 11:53 AM, karena wrote:
I have a dataset like the following:
subject class value
123 1 10
124 1 12
125 1 12
223 2 23
224 2 18
225 2 19
323 3 21
324 3 10
325 3 19
326 3 20
how to calculate the summary value for each factor?
thanks
karena
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