Harmonic mean is used to calculate the average of a set of numbers. Here the number of elements will be averaged and divided by the sum of the reciprocals of the elements. The Harmonic mean is always the lowest mean.
X = Individual score N = Sample size (Number of scores)
To find the Harmonic Mean of 1,2,3,4,5.
Calculate the total number of values. N = 5
Now find Harmonic Mean using the above formula. N/(1/a1+1/a2+1/a3+1/a4+.......+1/aN) = 5/(1/1+1/2+1/3+1/4+1/5) = 5/(1+0.5+0.33+0.25+0.2) = 5/2.28 So, Harmonic Mean = 2.19 This example will guide you to calculate the harmonic mean manually.
This tutorial will help you dynamically to find the Harmonic Mean problems.