Re: [R] Incorrectness of mean()

2011-02-28 Thread Rob Tirrell
Keep your eyes out for this - you will find this sort of behavior throughout R. -- Robert Tirrell | r...@stanford.edu | (607) 437-6532 Program in Biomedical Informatics | Butte Lab | Stanford University On Mon, Feb 28, 2011 at 02:26, zbynek.jano...@gmail.com < zbynek.jano...@centrum.cz> wrote:

Re: [R] Incorrectness of mean()

2011-02-28 Thread zbynek.jano...@gmail.com
Oh, I see it now. I guess it confused me, when it did not give me warning and also the numbers were very much alike, so I expected wrong decimal places thanks zbynek -- View this message in context: http://r.789695.n4.nabble.com/Incorrectness-of-mean-tp3327701p3327714.html Sent from the R help m

Re: [R] Incorrectness of mean()

2011-02-28 Thread Claudia Beleites
On 02/28/2011 11:07 AM, zbynek.jano...@gmail.com wrote: I have found following problem: I have a vector: a<- c(1.04,1.04,1.05,1.04,1.04) I want a mean of this vector: mean(a) [1] 1.042 which is correct, but: mean(1.04,1.04,1.05,1.04,1.04) [1] 1.04 gives an incorrect value. how is this possi

Re: [R] Incorrectness of mean()

2011-02-28 Thread Jim Lemon
On 02/28/2011 09:07 PM, zbynek.jano...@gmail.com wrote: I have found following problem: I have a vector: a<- c(1.04,1.04,1.05,1.04,1.04) I want a mean of this vector: mean(a) [1] 1.042 which is correct, but: mean(1.04,1.04,1.05,1.04,1.04) [1] 1.04 gives an incorrect value. how is this possi

[R] Incorrectness of mean()

2011-02-28 Thread zbynek.jano...@gmail.com
I have found following problem: I have a vector: > a <- c(1.04,1.04,1.05,1.04,1.04) I want a mean of this vector: > mean(a) [1] 1.042 which is correct, but: > mean(1.04,1.04,1.05,1.04,1.04) [1] 1.04 gives an incorrect value. how is this possible? thanks, zbynek -- View this message in context: h