harmonic mean

In this scenario, using the arithmetic or harmonic mean would change the ranking of the results depending on what is used as a reference.

The focus so determined would be about 1.3 m, the approximate harmonic mean of the near and far distances.

The harmonic mean is a special case where all of the weights are equal to 1.

The harmonic mean, on the other hand, gives equal weight to each data point.

For a random sample the harmonic mean is calculated as above.

In geophysical reservoir engineering studies, the harmonic mean is widely used.

Similarly, the harmonic mean is lower than the geometric mean.

Then the effective population size is the harmonic mean of these, giving:

The harmonic mean tends to be dominated by the smallest bottleneck that the population goes through.

The harmonic mean is very sensitive to low values.