Standard+deviation

Standard Deviation (Distribution Theory) (GWU EMSE-271)
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Standard deviation is square root of variance; more useful units

"In probability theory and statistics, **standard deviation** is a measure of the variability or dispersion of a statistical population, a data set, or a probability distribution. A low standard deviation indicates that the data points tend to be very close to the mean, whereas high standard deviation indicates that the data are spread out over a large range of values.." - [|Wikipedia]


 * Sources:**
 * EMSE 271, Fall 2009
 * Standard deviation. (2009, September 11). In //Wikipedia, The Free Encyclopedia//. Retrieved 06:53, September 11, 2009, from []