# Ruby Math Normal Distribution

**URL:** <https://www.ruby-forum.com/t/ruby-math-normal-distribution/111051>\
**Category:** Rails\
**Created:** [August 2, 2007, 6:21am UTC](https://www.ruby-forum.com/t/ruby-math-normal-distribution/111051 "2007-08-02T06:21:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![murphy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/5fc32e/32.png) [@murphy](https://www.ruby-forum.com/u/murphy)\
**Post date:** [August 2, 2007, 6:21am UTC](https://www.ruby-forum.com/t/ruby-math-normal-distribution/111051/1 "2007-08-02T06:21:13Z")

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Given a Z can ruby spit back the appropriate probability from a Normal  
Distribution curve?

M

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**Author:** ![murphy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/5fc32e/32.png) [@murphy](https://www.ruby-forum.com/u/murphy)\
**Post date:** [August 2, 2007, 9:22pm UTC](https://www.ruby-forum.com/t/ruby-math-normal-distribution/111051/2 "2007-08-02T21:22:12Z")

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On Aug 2, 2007, at 12:21 AM, Murphy Blatt wrote:

> Given a Z can ruby spit back the appropriate probability from a  
> Normal Distribution curve?

not particularly well documented, but: [http://rubyforge.org/projects/](http://rubyforge.org/projects/)  
rubystats/

-faisal