Hi, It looks like overflow bins in TH1 class have no effect on a calculation of the mean value : root [0] TH1F hist("test","test",10,0,10); root [1] hist->Fill(5.4); root [2] hist->Fill(15.5); root [3] hist->GetMean() (const Stat_t)5.40000000000000036e+00 Is it a bug or feature ? Thanks, Sasha. _________________________________________________________________ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail
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