variance(redirected from variance ratio distribution)
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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
variancesee MEASURES OF DISPERSION.
The square of the standard deviation.
A written authorization, from the responsible agency, permitting construction in a manner which is not allowed by code or other regulations.