Dear all, sorry for the repetition, but I think it is the case to show what really happens to me. I have created a simple macro where I create a histogram with a given number of bins and limits. I filled it randomy with a gaussian centered to the middle point of the histogram range. Then, I changed the histogram binning, simply doubling the number of bins, and leavin the bin range unchanged. What I obtain is in the second pad of the picture, that is the histogram is not any more centered to 0. Anyway, in the stats pavetext, the Mean is the same. What wrong did I do? Cheers, Alberto
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