What is HARMEAN function in Excel? NORM.DIST function is one of Statistical functions in Microsoft Excel that returns the harmonic mean of a data set. The harmonic mean is the reciprocal of the arithmetic mean of reciprocals. Syntax of HARMEAN function HARMEAN(number1, [number2], …) The HARMEAN function syntax has the following arguments: Number1, number2, …    Number1 is required, […]