> martin wrote: > > now my question : > > is it possible, that GetMean() returns the mean value MINUS ONE ? > > Rene Brun writes: > Hi Martin, > I do not understand your question. Why -1 and not +5 ? > What is wrong in doing h.GetMean()-1 ? TH1::GetMean() returns the mean calculated over the binned contents of the histogram, so under certain circumstances (like a histogram with bin 3 filled with even integers) the returned mean can be different from the real one. best, pasha
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