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 ...

How to Make a Curved Chart for Standard Deviation in Excel. Using Microsoft Excel you can create charts based on the data and formulas entered in a worksheet.

The residual standard deviation describes the difference in standard deviations of observed values vs. predicted values in a regression analysis.