Calculating data fluctuations-- also called variance -- is a multi-step process that requires total accuracy. Excel 2010 provides two basic formulas for calculating fluctuations, depending on whether ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Dr. JeFreda R. Brown is a financial consultant, ...

Probability calculations determine the chance of a specific event occurring. This calculation factors in the number of positive events with respect to the total number of possible results. When you ...

Daniel McNulty began writing for Investopedia in 2012. His work includes articles on financial analysis, asset allocation, and trading strategies. Andy Smith is a Certified Financial Planner (CFP®), ...