この関数は Google スプレッドシートでも Excel と同じように機能します。構文も引数も同じです。
HARMEAN(number1, [number2], ...)The harmonic mean is the reciprocal of the arithmetic mean of reciprocals. It is most appropriate for averaging rates or ratios, such as speed or price-to-earnings ratios.
=HARMEAN(10, 20, 40)結果: 17.142857
Calculates the harmonic mean of 10, 20, and 40.
HARMEAN returns a #NUM! error if any data point is less than or equal to zero.