Calculate your T-Value by taking the difference between the mean and population mean and dividing it over the standard deviation divided by the degrees of freedom square root.

Here are 3 easy ways to calculate the square root of a number in Microsoft Excel - using SQRT function, POWER function and Exponential formula.

Learn how to calculate the net present value (NPV) of your investment projects using Excel's XNPV function.

Parentheses: Controlling the Order of Operations Parentheses—or rounded brackets—are used in Excel to define the order in which calculations are performed.