R中的绝对偏差计算 [英] Median Absolute Deviation Computation in R

问题描述

我得到的是一个非常令人困惑的东西:

A quite confusing thing is what I got:

以下向量的绝对绝对中位数输出是

vec = c( -5.665488 ,3.963051, 14.14956, 0, -5.665488)

> mad(vec)
[1] 8.399653

但是，如果我计算得出以下值:

However, if I compute that I got the following value:

中位数绝对偏差= 5.665488

Median absolute deviation = 5.665488

，它也等于我在线上找到的计算值: http ://www.miniwebtool.com/median-absolute-deviation-calculator/

which is equal to the value of the computation I have found online as well: http://www.miniwebtool.com/median-absolute-deviation-calculator/

如何解释我和网站的计算值与R值之间的差异?

How can the difference between the calculated value of mine and the website and the value of R be explained?

推荐答案

与mad函数有关，该函数会自动将缩放常数设置为1.482.如果你这样做

It has to do with the mad function automatically setting the scaling constant as 1.482. If you do

mad(vec, constant=1)

您将获得与其他方法相同的输出

You get the same output as your other methods

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