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
你能推荐一些简单的 Java 统计包吗?
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 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...
你们用什么来做这个?
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?
嗯,不难.我只是在手动编码这些之后才问这个问题.但是,当我需要这些最简单的功能时,手头没有这些最简单的功能,这只会增加我的 Java 挫败感.我不记得用心计算 stdev 的公式了 :)
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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