平均数 píngjūnshù mean Definitions Defs Origin Strokes Stroke Words Sentences Sents 算术平均数 suànshùpíngjūnshù arithmetic mean 几何平均数 jǐhépíngjūnshù geometric mean 平方平均数 píngfāngpíngjūnshù root mean square The square root of the arithmetic mean of the squares of a set of values, also known as the quadratic mean.调和平均数 tiáohépíngjūnshù harmonic mean
