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

[Corey Sparks]

Did you try tapply?
?tapply

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

or something like that

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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
210-458-3166
corey.sparks 'at' utsa.edu
https://rowdyspace.utsa.edu/users/ozd504/www/index.htm
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