Standard deviation - Wikipedia, the free encyclopedia
Standard deviation is a widely used measure of variability or diversity used in statistics and probability theory. It shows how much variation or "dispersion" exists ...
http://en.wikipedia.org/wiki/Standard_deviation

standard deviation: Definition from Answers.com
Library > Literature & Language > Dictionary n. ( Abbr. SD ) A statistic used as a measure of the dispersion or variation in a distribution, equal to the square root ...
http://www.answers.com/topic/standard-deviation

Standard Deviation
A simpler explanation of standard deviation, written by a former math-major-turned-journalist who likes to explain math to people don't understand or just plain hate it.
http://www.robertniles.com/stats/stdev.shtml

Standard Deviation and Variance: Common Measures of Variability
The variance and the closely-related standard deviation are measures of how spread out a distribution is. In other words, they are measures of variability.
http://davidmlane.com/hyperstat/A16252.html

Standard Deviation Definition | Investopedia
Standard Deviation - Definition of Standard Deviation on Investopedia - 1. A measure of the dispersion of a set of data from its mean. The more spread apart the data ...
http://www.investopedia.com/terms/s/standarddeviation.asp

Standard deviation - Simple English Wikipedia, the free encyclopedia
Standard deviation is a number used to tell how measurements for a group are spread out from the average (mean), or expected value. A low standard deviation means ...
http://simple.wikipedia.org/wiki/Standard_deviation

Standard Deviation -- from Wolfram MathWorld
The sample standard deviation distribution is a slightly complicated, though well-studied and well-understood, function. However, consistent with widespread ...
http://mathworld.wolfram.com/StandardDeviation.html

Standard Deviation Calculator - Calculate mean, variance of the ...
Standard Deviation - Calculator. Free arithmetic standard deviation calculations online. Find the mean, variance, standard deviation of the given numbers.
http://easycalculation.com/statistics/standard-deviation.php

Standard Deviation and Variance - Math is Fun - Maths Resources
Standard Deviation and Variance. Deviation just means how far from the normal. Standard Deviation. The Standard Deviation is a measure of how spread out numbers are.
http://www.mathsisfun.com/data/standard-deviation.html

Standard deviation - Psychology Wiki
In probability theory and statistics, the standard deviation of a statistical population, a data set
http://psychology.wikia.com/wiki/Standard_deviation