[ROOT] Re: What happens to statistics in Add, Multiply

From: Rene Brun (Rene.Brun@cern.ch)
Date: Tue Jan 30 2001 - 18:53:38 MET


Hi Alexander,

With Add, statistics are computed using the statistical quantities
in both histograms. In this case, the resulting stats preserve the
original full accuracy.
In case of a multiplication/division, statistics are recomputed from
the bin contents.

Rene Brun


Alexander Cherlin wrote:
> 
>         Dear rooters!
> If I create a new histogram using Add (or Multiply), what show Mean and
> RMS values in statistics of the new histogram?
> 
> Thanks in advance,
> Alexander.
> 
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