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variance
(redirected from Sample variance)

   Also found in: Dictionary/thesaurus, Medical, Legal, Financial, Wikipedia 0.01 sec.
variance
1. a difference or discrepancy between two steps in a legal proceeding, esp between a statement in a pleading and the evidence given to support it
2. (in the US and Canada) a licence or authority issued by the board of variance to contravene the usual rule, esp to build contrary to the provision of a zoning code
3. Chem the number of degrees of freedom of a system, used in the phase rule

variance [′ver·ē·əns]
(statistics)
The square of the standard deviation.

variance
A written authorization, from the responsible agency, permitting construction in a manner which is not allowed by code or other regulations.


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A casual observation of gas price changes over time suggests a remarkable change in the volatility of gasoline price after 1998 (the sample variance triples after 1999).
Such things as sampling plans, sample size, how to minimize sample variance (e.
2]) for the Wilson intervals since the population variance, not the sample variance, is used in the calculation.
 
 
 
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