Simple statistics - Java packages for calculating mean, standard deviation, etc

java math statistics packages
Peter Perháč picture Peter Perháč · Nov 14, 2009 · Viewed 73.8k times · Source

Could you please suggest any simple Java statistics packages?

I don't necessarily need any of the advanced stuff. I was quite surprised that there does not appear to be a function to calculate the Mean in the java.lang.Math package...

What are you guys using for this?

EDIT

Regarding:

How hard is it to write a simple class that calculates means and standard deviations?

Well, not hard. I only asked this question after having hand-coded these. But it only added to my Java frustration not to have these simplest functions available at hand when I needed them. I don't remember the formula for calculating stdev by heart :)

Answer

John Paulett picture John Paulett · Nov 14, 2009

Apache Commons Math, specifically DescriptiveStatistics and SummaryStatistics.

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