Dear expert,
I have a question that is probably very simple.
I am wondering how the error bar on histogram is calculated in a case of normalized count.
I am explaining:
For an histogram of counts, we assume a Poisson distribution and consider that the error on the count (Ni) in a bin i is the square root of the count sqrt(Ni) at 1 sigma.
However, in the case of a normalized count histogram (% of the total count), we plot Ni/Nt in % in the bin i where Nt is the total count. In such a case, how is calculated the relative error on the relative count?
Many thanks in advance for your answer.
Yours,
Thomas