title: Statistic Library for Objective C
body: <p>I know that there are plenty of packages for java for statistic calculation but in this case i need one for objective C.
  I scope of an App i need to calculate  Cramer's V
  <a href="http://en.wikipedia.org/wiki/Cram%C3%A9r%27s_V" rel="nofollow">http://en.wikipedia.org/wiki/Cram%C3%A9r%27s_V</a> of nominal attributes of some classes based on their attributes.I do not want to reinvent the wheel.I also need to find linear correlation and other basic operations as well.</p>
  
  <p>Are there any known open source good libraries for such purposes?</p>