harmonic mean怎么算
答案:1 悬赏:40 手机版
解决时间 2021-04-07 18:20
- 提问者网友：刺鸟
- 2021-04-06 19:33
harmonic mean怎么算
最佳答案
- 五星知识达人网友：迷人又混蛋
- 2021-04-06 20:06
In mathematics, the harmonic mean (sometimes called the subcontrary mean) is one of several kinds of average, and in particular one of the Pythagorean means. Typically, it is appropriate for situations when the average of rates is desired.
The harmonic mean can be expressed as the reciprocal of the arithmetic mean of the reciprocals. As a simple example, the harmonic mean of 1, 2, and 4 is
The harmonic mean H of the positive real numbers is defined to be
From the third formula in the above equation, it is more apparent that the harmonic mean is related to the arithmetic and geometric means. It is the reciprocal dual of the arithmetic mean for positive inputs:
The harmonic mean is a Schur-concave function, and dominated by the minimum of its arguments, in the sense that for any positive set of arguments, . Thus, the harmonic mean can not be made arbitrarily large by changing some values to a bigger one (while having at least one value unchanged).
The harmonic mean can be expressed as the reciprocal of the arithmetic mean of the reciprocals. As a simple example, the harmonic mean of 1, 2, and 4 is
The harmonic mean H of the positive real numbers is defined to be
From the third formula in the above equation, it is more apparent that the harmonic mean is related to the arithmetic and geometric means. It is the reciprocal dual of the arithmetic mean for positive inputs:
The harmonic mean is a Schur-concave function, and dominated by the minimum of its arguments, in the sense that for any positive set of arguments, . Thus, the harmonic mean can not be made arbitrarily large by changing some values to a bigger one (while having at least one value unchanged).
我要举报
如以上回答内容为低俗、色情、不良、暴力、侵权、涉及违法等信息，可以点下面链接进行举报！
点此我要举报以上问答信息
大家都在看
推荐资讯