FEATURES/PROBLEMS:  * Pure Ruby * It’s small and simple * It’s probably good enough * I haven’t profiled it against large data sets * Naive median implementation requires a sort, but it could be done in linear time. Patches welcome. * Missing tests for harmonic and geometric mean – the stats package I was generating test data with didn’t have them.  == SYNOPSIS:  require ‘ministat’  data = [1,2,3,4,5,6,7,7,6,5,4,4] puts MiniStat::Data.new(data).to_s