So one thing one considers a lot, is taking each bin separately, and
combining them. I don"t know how hatd either of those are, to do.l,
but to
To consider whether that is reasonable to do or not, we imagine trying
it.
If I have one bin from a histogram, and I consider this histogram was
sampled from a population described by another, there might be only so
many ways of sampling the other histogram, to fill the one.