Dear all,

Very simple question, but apparently uneasy to solve in R:

I have a sampling of a variable x: (3, 4. 5, 2, ...)

I want to know:
 - 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?

Thanks in advance,

regards,
Xavier



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Xavier Prudent
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Computational biology and evolutionary genomics
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*Guest scientist at the Max-Planck-Institut für Physik komplexer Systeme*
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*Max Planck-Institute for Molecular Cell Biology and Genetics*
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(MPI-CBG)
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Phone: +49 351 210-2621
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*Mail: prudent [ at ] mpi-cbg.de
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