On 29/10/2008, at 10:53 AM, Igor Telezhinsky wrote:
Dear all,
I have recently found out about the R project. Could anyone tell me
if it is
possible to make the comparison of two distributions using R
packages? The
problem is TRICKY because I have the distributions of measurements
and each
measurement in the given distribution has its own error, which I
need to
take into account when comparing these distributions. If anyone
knows it is
possible with R, could you please tell me what package to use. I
will really
appreciate some hints in code as well.
Your message is almost completely opaque to me. What do you actually
want
to do? What do you mean by ``distributions''? Do you actually know
those
distributions (unlikely!) or do you have a sample from each of those
distributions?
What do you mean by ``compare''? Do you simply want to *test*
whether the
distributions are indeed different (on the basis of the given ---
presumably ---
samples)? Or do you want to calculate/estimate some measure of the
difference?
What measure?
It sounds to me like your knowledge of statistics is to say the least
limited.
You can't expect the R system, wonderful as it is, to make up for
this lack
of knowledge. Learn some statistics first, before you try to do a
statistical
analysis.
cheers,
Rolf Turner
P. S. If just want to test for a difference between two distributions/
populations
on the basis of independent samples from each of those distributions,
then you can
use the function ks.test().
R. T.
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