Standard deviation, while common, inadequately captures investment risk due to its equal treatment of gains and losses and ...

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

Learn how using historical data, instead of standard deviation, offers a more accurate assessment of stock volatility and risk management strategies.

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 ...

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 ...

Volatility is troublesome for many investors. Value changes in your stocks, your portfolio, or an index can keep you up at night -- or worse, push you to make emotional decisions you later regret.

When reviewing cash flow data for your small business, knowing the standard deviation can help you determine if the numbers are out of whack. Calculating standard deviation manually can be ...