Renewed ruby bindings for gnuplot. Started at GSoC 2015.

Open Compliance Toolkit

Red Datasets Daru adds `#to_daru` method to each dataset in Red Datasets. Using this method, you can obtain dataset as an object of `Daru::DataFrame` class, which is provided by [daru](https://github.com/sciruby/daru).

A suite for basic and advanced statistics on Ruby

Various functions for time series analysis.

Non-parametric test for assessing whether two independent samples of observations come from the same distribution. Extracted from StatSample (https://github.com/sciruby/statsample)