Variance 02
Variance 02 : (a) statistics. A measure of the variation shown by a set of observations, defined by the sum of the squares of deviations from the mean, divided by the number of degrees of freedom in the set of observations. [Last, 1983: A Dictionary of Epidemiology]; (b) law. Permission granted for a limited time (under stated conditions) for a person or company to operate outside the limits prescribed in a regulation. [CARB, 2000: Glossary of Air Pollution Terms]; (c) law. Government permission for a delay or exception in the application of a given law, ordinance, or regulation. [USEPA, 1997a: EPA Terms of Environment] [USDOE, 2000: RAIS Glossary]
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