Re: Statistical test for equality ?

[ghaverla]

On Mon, 16 Dec 2013 21:37:16 +0100
stn021 <address@hidden> wrote:

> it there a statistical test if 2 samples are equal?
> 
> The obvious choices would be correlation or paired t-test but both
> cannot tell if the samples are equal or if one sample is a multiple
> of the other

Do you know the probability density function applicable for the
samples?  Are the samples independent?

In general, what you are looking for is what fraction of the two PDFs
overlap.  If they overlap very little, they are not likely to be
equal.  If they overlap a lot, they are likely to be equal.

Gord