[R] Stratified weighted statistics

Erich Neuwirth erich.neuwirth at univie.ac.at
Thu Aug 30 01:20:07 CEST 2007

In the help file for summarize
in the examples section search for the following line

# Get stratified weighted means

Vikas Rawal wrote:
>> Please look again at the help files for summarize and wtd.mean which 
>> show how to do this.

Erich Neuwirth, University of Vienna
Faculty of Computer Science
Computer Supported Didactics Working Group
Visit our SunSITE at http://sunsite.univie.ac.at
Phone: +43-1-4277-39464 Fax: +43-1-4277-39459

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