How to Calculate T-Value From Mean & Standard Deviation in Excel. Calculate t-values in your Microsoft Excel spreadsheet by combining built-in functions with custom formulas. T-values, also known ...

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

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.