[R] Incorrectness of mean()

[zbynek.janoska@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

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