A measure of the variation in a distribution, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean, ie. the square root of the variance.

Standard deviation is a widely used metric to ascertain the investment risk of mutual funds. The concept of Standard Deviation becomes important when you invest in a market-linked product like mutual ...

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 ...

Many standard test and estimation procedures require the computation of the sample standard deviation. It is, however, often possible to replace the standard deviation by the more easily computed ...

The Journal of Educational Research is a well-known and respected periodical journal that reaches an international audience of educators and others concerned with cutting-edge theories and proposals.

In statistics, the average amount a number varies from the average number in a series of numbers. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Standard deviation is a widely used metric to ascertain the investment risk of mutual funds. The concept of Standard Deviation becomes important when you invest in a market-linked product like mutual ...