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From: Claudio Bustos on 22 Feb 2010 13:04 Hi, everyone: I like to invite you all to test and give some feedback on my ruby statistical package "statsample" The home URL is: http://rubystatsample.rubyforge.org/ and you can install it with gem install statsample Have descriptive and inferencial statistical tools, including Multiple, Logit and Probit Regression, PCA, Factor Analysis, Tetrachoric and Polychoric correlation. I implement the algorithms according to my needs and time, so if you need something, you ask and I try to implement it. For example, to do a Multiple Regression Analysis you could do require 'statsample' samples=10000 a=samples.times.collect {rand}.to_scale b=samples.times.collect {rand}.to_scale c=samples.times.collect {rand}.to_scale d=samples.times.collect {rand}.to_scale ds={'a'=>a,'b'=>b,'c'=>c,'d'=>d}.to_dataset ds['y']=ds.collect{row row['a']*5+row['b']*3+row['c']*2+row['d']*1+rand()} lr=Statsample::Regression::Multiple::RubyEngine.new(ds,'y') puts lr.summary  Posted via http://www.rubyforum.com/.

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