How to calculate return on investment (ROI), the money an investment made relative to its cost, in Microsoft Excel.

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.

When scientists spot an asteroid whose trajectory might take it close to Earth, they monitor it frequently and calculate the probability that it might collide with our planet.

A comprehensive guide on how to convert Fractional, Decimal and American odds to percentage and probability with examples. Formula explained.