Learn how to calculate Weighted Average in Excel with percentages using the SUM function and the SUMPRODUCT function.

Learn how to calculate simple, weighted and exponential moving averages in Microsoft Excel using Data Analysis Tool Pack or Formula.

Calculating the return One of the best methods for calculating an average return for a stock investment is the XIRR function in Excel.

Percentages aren't always easy to calculate, but one of the best tools in Excel's toolbox is calculating percentages for you. Here's how to do it.