Averaging is easy until you want to dynamically average the last few years on the fly. There are at least two easy ways to accommodate the n requirement. Averaging is easy business in Microsoft Excel.

Marshall Hargrave is a stock analyst and writer with 10+ years of experience covering stocks and markets, as well as analyzing and valuing companies. Dr. JeFreda R. Brown is a financial consultant, ...

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 ...