Hello Didier, Please read the posting guide, it says that the R mailing list speaks in english : http://www.R-project.org/posting-guide.html And it also says to read the FAQ and An introduction to R. That covers your question.
After that, try : ?mean ?by Hope this helps. Selon HOME - Didier Ledoux <[EMAIL PROTECTED]>: > Je suis d�butant en R. Je voudrais faire un tableau de statistiques > descriptives ou les moyennes seraient calcul�es en fonction de deux crit�res: > sexe, r�gion > Cela donnerait ceci: > SEXE REGION MOYENNE > femme A moy1 > femme B moy2 > Homme A moy3 > Homme B moy4 > > Comment dois-je faire? > Quelles commandes utiliser? > > Merci pour votre aide > > [[alternative HTML version deleted]] > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
