Dear Rene, I dont understand why this happens? First of all, thanx a lot for helping me in fitting gaussian to ntuples. Now everything is going fine, but whenever I have a dataset with numbers greater than one and the range of the data numbers(of 400 data points say) for example lies between 2.3 to 2.6, and I plot an ntuple and fit, I am getting a mean value of 0.5 something irrelevant to the data that I am feeding in. But when I make the numbers to become less than 1,say 0.23 to .26 then I am getting relevant results ie the mean is now between the range (0.244). Is that a bug of any of the version b'coz I am using one of the previous versions of root.Probably 3.00. How can I get around it? Please reply. Thanx, yours, Shiva.
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