Harmonic mean is the reciprocal of arithmetic mean of reciprocal.

Formula:

Properties:

- Harmonic mean is always smaller compared to geometric mean, arithmetic mean or quadratic mean.
- To get the correct result, the data values must be all positive

Example:

Example applications of Harmonic Means:

- In traffic flow theory, time-mean-speed is an arithmetic mean of speed, while space-mean-speed is a harmonic mean of speed.The speed is measured on the same length of distance travelled.
- In Industrial Engineering, Brown Gibson method uses harmonic means to compute the performance measure of objective factors.
- In Electrical engineering, harmonic means is applied to study the performance of transmission communication systems with relays

Use the interactive program below to compute Harmonic mean of a list of numbers separated by comma. You may change with your own input values.

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See also: Minskowski mean, Lehmer mean, Generalized Mean

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**Preferable reference for this tutorial is**

Teknomo, Kardi (2015) Mean and Average. http:\\people.revoledu.com\kardi\ tutorial\BasicMath\Average\