幾き何か平へい均きん

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Meanings

1

noun

mathematics

Mathematical term for the nth root of the product of n numbers. Used in statistics and finance.

算さん術じゅつ平へい均きん
Arithmetic mean (simple average), while 幾何平均 is the geometric mean (multiplicative average).
調ちょう和わ平へい均きん
Harmonic mean, another type of average used for rates and ratios.

From 幾何 (geometry) + 平均 (mean/average). The term is a direct calque of the English 'geometric mean'.