Well, it depends on what mean and sd do you want to calculate. If it's the mean of the variation or frequency mean and sd from the showed variables, you should do: > mean(variation) > sd(variation) > mean(frequency) > sd(frequency)
However, if you want to calculate the mean of variation, taking into account the frequency it has, i.e., a weighted mean, then you should do: > weighted.mean(variation,frequency) HTH, Joao Daniel -- View this message in context: http://r.789695.n4.nabble.com/Standard-deviation-and-Mean-tp3597521p3597628.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
