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29

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I am trying to implement a NORMDIST feature in my iphone application, but I am not sure what library to import, or how I would go about doing this.

If someone can point me in a direction, that would be awesome.

+2  A: 

Not sure if this is precisely what you're looking for but here is an algorithm for calculating a cumulative normal distribution approximation. There is an implementation in C++ that should be fairly trivial to port to Obj-C.

Greg Sexton