Compstat is a project mainly written in Racket, it's free.
EXPERIMENTAL: Very Simple Computational Statistics in Racket
EXPERIMENTAL: Very simple set of procedures doing statistics.
Inspired by Sussman's book on computational classical mechanics [1] and Conrad Wolfram's talk on ``How to Teach Kids Real Math'' [2].
[1] http://mitpress.mit.edu/SICM/ [2] http://www.ted.com/talks/conrad_wolfram_teaching_kids_real_math_with_computers.html
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