Read ?mean. Look at the argument list.
The mean function only applies to the first argument. On July 21, 2018 9:39:42 AM PDT, John Kane via R-help <r-help@r-project.org> wrote: >Either I am doing something very stupid or my R installation has a >glitch. What am I missing? >dd1 <- 50 >dd2 <- 54 > >mean(dd1, dd2) >[1] 50 # wrong > >(dd1 + dd2)/2 >[1] 52 # correct > >aa <- c(48, 52, 56, 54, 52) > >mean(aa) >[1] 52.4 # correct > > > > [[alternative HTML version deleted]] > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >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. -- Sent from my phone. Please excuse my brevity. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.