Expected return and standard deviation can help you analyze investment portfolios. Learn their differences, uses, and ...

Standard deviation is a measurement of variation within a set of data points relative to the dataset’s mean average. A higher standard deviation indicates greater variability, while a lower standard ...

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, ...

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— -- 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 ...

Rate of return and standard deviation are two of the most useful statistical concepts in business. These two figures will tell you whether a business project is worth the investment and trouble, given ...

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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 ...

Standard deviation (SD) is still the most widely used measure of dispersion, or in financial markets, risk.That all sounds a bit technical but it's actually pretty straightforward to understand. It is ...