Dear R helpers, I have recently installed R version 2.15.0 I just wanted to calculate mean(16, 18) Surprisingly I got answer as> mean(16, 18)[1] 16> mean(18, 16)[1] 18> mean(14, 11, 17, 9, 5, 18)[1] 14 So instead of calculating simple Arithmetic average, mean command is generating first element as average. I restarted the machine, changed the machine, but still the reply is same. I have been using this mean function ever since I strated learning R, but this has never happened. Kindly guide Vincy [[alternative HTML version deleted]]
You'll need to pass the data as a vector. mean(16, 18) is asking the mean of 16. 18 is passed to the second argument which is trim. So you are doing mean(16, trim = 18) What you want is mean(c(16, 18)) Best regards, Thierry ir. Thierry Onkelinx Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance Kliniekstraat 25 1070 Anderlecht Belgium + 32 2 525 02 51 + 32 54 43 61 85 Thierry.Onkelinx at inbo.be www.inbo.be To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher The plural of anecdote is not data. ~ Roger Brinner The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey -----Oorspronkelijk bericht----- Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Namens Vincy Pyne Verzonden: dinsdag 22 mei 2012 11:10 Aan: r-help at r-project.org Onderwerp: [R] What's wrong with MEAN? Dear R helpers, I have recently installed R version 2.15.0 I just wanted to calculate mean(16, 18) Surprisingly I got answer as> mean(16, 18)[1] 16> mean(18, 16)[1] 18> mean(14, 11, 17, 9, 5, 18)[1] 14 So instead of calculating simple Arithmetic average, mean command is generating first element as average. I restarted the machine, changed the machine, but still the reply is same. I have been using this mean function ever since I strated learning R, but this has never happened. Kindly guide Vincy [[alternative HTML version deleted]] ______________________________________________ R-help at 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. * * * * * * * * * * * * * D I S C L A I M E R * * * * * * * * * * * * * Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver weer en binden het INBO onder geen enkel beding, zolang dit bericht niet bevestigd is door een geldig ondertekend document. The views expressed in this message and any annex are purely those of the writer and may not be regarded as stating an official position of INBO, as long as the message is not confirmed by a duly signed document.
> mean( 16, 18 )[1] 16> mean( c( 16, 18 ) )[1] 17 On Tuesday 22 May 2012 02:10:27 Vincy Pyne wrote:> > Dear R helpers, > > I have recently installed R version 2.15.0 > > I just wanted to calculate > > mean(16, 18) > > Surprisingly I got answer as > > > mean(16, 18) > [1] 16 > > > > mean(18, 16) > > [1] 18 > > > mean(14, 11, 17, 9, 5, 18) > [1] 14 > > > So instead of calculating simple Arithmetic average, mean command is generating first element as average. I restarted the machine, changed the machine, but still the reply is same. I have been using this mean function ever since I strated learning R, but this has never happened. > > Kindly guide > > Vincy > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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.
you need to provide a vector: mean(c(16,18)) Sent from my iPad On May 22, 2012, at 5:10, Vincy Pyne <vincy_pyne at yahoo.ca> wrote:> > Dear R helpers, > > I have recently installed R version 2.15.0 > > I just wanted to calculate > > mean(16, 18) > > Surprisingly I got answer as > >> mean(16, 18) > [1] 16 > > >> mean(18, 16) > > [1] 18 > >> mean(14, 11, 17, 9, 5, 18) > [1] 14 > > > So instead of calculating simple Arithmetic average, mean command is generating first element as average. I restarted the machine, changed the machine, but still the reply is same. I have been using this mean function ever since I strated learning R, but this has never happened. > > Kindly guide > > Vincy > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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.