[Boost-users] Math/Statistical Distributions

Hi, Statistics have been a while ago... I was reading the documentation, at least part of it, of the Boost library Math/Statistical Distributions. But I think I need a bit of help... I have many values Yi that are closely distributed around a mean value Y-mean. The collection of Yi is obtained by an algorithm that sometimes produces trash values that need to be discarded. Such false values are typically not "close" to the Y-mean. I was hoping somebody could tell what distribution I should use and how I should use this. If I recall correctly from my school-days, I need the Normal (Gaussian) Distribution. What would be the algorithm to find those trash values? Thank you, Andrej