The GEOMEAN and HARMEAN are advanced statistical functions that typically require a deeper understanding of mathematics. This is probably why they aren't taught as often as the AVERAGE function.

This post explains how to calculate Weighted Average in Excel with percentages. In a standard arithmetic average where the sum of values is divided by the number of values, each data value is treated ...

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...