Dear Jeff,
Thanks for your fast answer,
I could for sure implement the 2-lines code to calculate the uncertainties,
but I am astonished that a widespread statistics package like R does not
include these very basic quantities.
Regards,
Xavier


2013/5/3 S Ellison <S.Ellison@lgcgroup.com>

>
>
> >  - the mean <x>                   -> mean(x)
> >  - the uncertainty on <x>       -> std.error(x) ? Or sd(x)?
> >  - the standard deviation of x  -> ?
> >  - the uncertainty on the standard deviation -> ?
> >
> > Anyone has an idea?
>
> 1. Use R's help system to look up 'standard deviation' and 'mean'
> e.g.:
> ??'standard deviation'
> ??'mean'
>
> For the other two questions, consult your basic stats textbook; the
> answers can be calculated from the two above together with the number of
> observations.
>
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Xavier Prudent
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