Through simple mathematics, everyday shooters, hunters and techie enthusiasts alike can matter-of-factly produce answers to complex questions related to firearms and the ballistics therein. The ...

Marshall Hargrave is a stock analyst and writer with 10+ years of experience covering stocks and markets, as well as analyzing and valuing companies. Dr. JeFreda R. Brown is a financial consultant, ...

— -- Q: Why is standard deviation used by some investors to measure risk? A: Measuring risk can be a pretty straight-forward exercise. When it comes to figuring the odds of an accident while ...

Charlene Rhinehart is a CPA , CFE, chair of an Illinois CPA Society committee, and has a degree in accounting and finance from DePaul University. Vikki Velasquez is a researcher and writer who has ...

In response to my article, Is the Stock Market Too Concentrated?, which relied upon standard-deviation calculations to assess investment risk, a reader wrote: “My problem [with your argument] is ...