discret random distributions: test

[Jerome BENOIT]

Thanks for the reply.

Brian Gough wrote:
> Jerome BENOIT writes:
>  > I understood the sampling part and the comparing part.
>  > What confuses me is the compatibility criteria.
>  > In particular, why the undimensionless sigma
>  > variable (a difference over a square root) is compare
>  > to a dimensionless value (a constant) ?
> 
> The number of counts in a bin is a dimensionless quantity.
> 

I guess that there is a missunderstanding on my side:
is there somewhere in the (classical) literature
something which can clarify my understanding of the criteria ?

Thanks in advance,
Jerome