harmonic mean

American  

noun

Statistics.

1. the mean obtained by taking the reciprocal of the arithmetic mean of the reciprocals of a set of nonzero numbers.

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harmonic mean British  

noun

1. the reciprocal of the arithmetic mean of the reciprocals of a set of specified numbers: the harmonic mean of 2, 3, and 4 is 3( 1/ 2 + 1/ 3 + 1/ 4 ) ^–1 = 3 6/ 13

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harmonic mean Scientific  

1. The reciprocal of the arithmetic mean of the reciprocals of a specified set of numbers.

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Etymology

Origin of harmonic mean

First recorded in 1880–85

Example Sentences

Eventually, they categorized proportions into 10 different classes, with names like the harmonic mean.

From Literature

Once we had those three numbers for each of the starting Super Bowl quarterbacks, we averaged them together using the harmonic mean rather than a simple average.

From Washington Post