Variance

Variance

Permission granted for a limited time (under stated conditions) for a person or company to operate outside the limits prescribed in a regulation.

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Part of Speech: noun
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Industry/Domain: Pollution control
Category: Air pollution
Company: ARB
Product:
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Related terms

variance

Pollution control; Air pollution

Permission granted for a limited time (under stated conditions) for a person or company to operate outside the limits prescribed in a regulation.

variance

Banking; Investment banking

Statistical measure of the risk exposure of an investment (share, bond etc) or portfolio. Variance is the amount by which individual earnings positions deviate from average ...

variance

Accounting; Auditing

A statistical measure of dispersion in a population. The variance is the square of the standard deviation. The standard deviation equals the square root of the arithmetic mean of ...

variance

Natural environment; Coral reefs

The population variance of a random variable is a non-negative number which gives an idea of how widely spread the values of the random variable are likely to be; the larger the ...

variance

Archaeology; Evolution

A measure of how variable a set of numbers are. Technically, it is the sum of squared deviations from the mean divided by (n-1) (the number of numbers in the sample minus one). ...

variance

Education; SAT vocabulary

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lead

Pollution control; Air pollution

A gray-white metal that is soft, malleable, ductile, and resistant to corrosion. Sources of lead resulting in concentrations in the air include industrial sources and crustal ...

nonattainment area

Pollution control; Air pollution

A geographic area identified by the U. S. EPA and / or CARB as not meeting either NAAQS or CAAQS standards for a given pollutant. For more information, please view our designated ...

air toxics

Pollution control; Air pollution

A generic term referring to a harmful chemical or group of chemicals in the air. Substances that are especially harmful to health, such as those considered under U. S. EPA's ...

nitrogen oxides

Pollution control; Air pollution

A general term pertaining to compounds of nitric oxide (NO), nitrogen dioxide (NO 2 ) and other oxides of nitrogen. Nitrogen oxides are typically created during combustion ...

primary standard

Pollution control; Air pollution

A dosage of air pollution scientifically determined to protect against human health effects such as asthma, emphysema, and cancer.

propellant

Pollution control; Air pollution

A gas with a high vapor pressure used to force formulations out of aerosol spray cans. Among the gases used are butanes, propanes and nitrogen.

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