Harmonic mean is the reciprocal of arithmetic mean of reciprocal.
- 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 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
Preferable reference for this tutorial is
Teknomo, Kardi (2015) Mean and Average. http:\\people.revoledu.com\kardi\ tutorial\BasicMath\Average\