[Pharo-users] Simple statistics package?

Hi, I need to perform simple statistical analysis over a small set of objects (~10-1000 max), basic stuff like getting the quartiles, mean, average of a certain set and perform moving averages. I'm looking for something where I can pass a collection of objects of my domain, an accessor and get the values mentioned above. I know there is PolyMath, but it seems to be oriented towards heavy number crunching and mathematical abstractions as its input. E.g. The PMHistogram works on pure numbers, so once I build it, I cannot know which of my objects fall into what group of the histogram. Does such a thing exist? Regards! Esteban A. Maringolo