[R] Calculating Summaries for each level of a Categorical variable

Corey Sparks corey.sparks at UTSA.EDU
Sat Jun 26 16:50:51 CEST 2010

Did you try tapply?

tapply(RT, RT$R, fun=WA)

or something like that

Corey Sparks, PhD
Assistant Professor
Department of Demography and Organization Studies
University of Texas at San Antonio
501 West Durango Blvd
Monterey Building 2.270C
San Antonio, TX 78207
corey.sparks 'at' utsa.edu
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