[R] What's wrong with MEAN?

[ONKELINX, Thierry]

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 op inbo.be
www.inbo.be

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-----Oorspronkelijk bericht-----
Van: r-help-bounces op r-project.org [mailto:r-help-bounces op r-project.org] Namens Vincy Pyne
Verzonden: dinsdag 22 mei 2012 11:10
Aan: r-help op 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




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