The basic mathematical concepts of standard deviation and variance are useful to investors. Compare variance versus standard deviation and calculate each.

How to Find Word & Excel Documents on Your Hard Drive. Word and Excel are part of Microsoft's Office suite of productivity software. If your small business has been using Office for a while ...

Excel and Google Sheets have three functions to calculate the internal rate of return: IRR, XIRR, and MIRR. Learn how these functions can calculate investment returns.