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A native extension for Ruby to handle standard deviation for Arrays
C++ Ruby
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Latest commit adb9a5e @corybuecker revised default stdev calculation to perform sample standard deviatio…
…n. Also added in a separate function to calculation population standard deviation

README.markdown

Ruby Standard Deviation

This is a native extension to Ruby that adds a standard deviation calculation to the Array class.

Usage

require 'ruby-standard-deviation'
r = [1,3,21,32,42]

# calculate sample standard deviation, you can also use stdevs
p r.stdev 

# calculate population standard deviation
p r.stdevp
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