简单统计 - 用于计算均值，标准差等的Java包 [英] Simple statistics - Java packages for calculating mean, standard deviation, etc

问题描述

你能否建议任何简单的Java统计软件包？

Could you please suggest any simple Java statistics packages?

我不一定需要任何高级的东西。我很惊讶在 java.lang.Math 包中似乎没有计算平均值的函数...

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...

你们有什么用呢？

编辑

关于：

写一个简单的类
有多难计算平均值和标准
偏差？

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

好吧，不难。手工编码之后我才问过这个问题。但是，当我需要这些功能时，它只会增加我的Java挫折感，而不是让这些最简单的功能可用。我不记得用心计算stdev的公式：）

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 :)

推荐答案

Apache Commons Math ，特别是 DescriptiveStatistics 和 SummaryStatistics 。

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