Algebra
Advanced

Harmonic Mean

Reciprocal of the average of reciprocals.

Formula

HM=n∑1/xiHM = \frac{n}{\sum 1/x_i}

Variables

x_iValues
nCount

Example

HM of 1,2,4 = 1.71

Did You Know?

The harmonic mean gives the correct average speed for a round trip at two different speeds.

meanaverage