peajoe wrote:

> I am looking to do some basic statistics in ruby.  Mean, Variance, 
> Standard deviation, etc.   Does anyone know if there is a gem or a 
> library available for this?

You might want to have a look at the NArray library that is available 
from RAA: http://www.ir.isas.ac.jp/~masa/ruby/index-e.html

It offers a few statistical methods and is quite fast as it is written in C.