That is exactly what I was going for. Basic algorithm yourself to help people understand the math but you wouldn't want to use this code in a production system.

That is exactly what I was going for. Basic algorithm yourself to help people understand the math but you wouldn't want to use this code in a production system. In fact I perform the vast majority of my statistical analysis in R. Ruby is just a fun language to implement basic statistical algorithms in and it the Ruby community as a whole doesn't hasn't put a lot of emphasis on stats.