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Definition of Variance

Babylon English

act or instance of variation; divergence; discrepancy, strife, discord
Variance Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(n.)
The quality or state of being variant; change of condition; variation.
  
(n.)
Difference that produce dispute or controversy; disagreement; dissension; discord; dispute; quarrel.
  
(n.)
A disagreement or difference between two parts of the same legal proceeding, which, to be effectual, ought to agree, -- as between the writ and the declaration, or between the allegation and the proof.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

variance
\va"ri*ance\ (?), n. [l. variantia.]
1. the quality or state of being variant; change of condition; variation.
2. difference that produce dispute or controversy; disagreement; dissension; discord; dispute; quarrel. that which is the strength of their amity shall prove the immediate author of their variance.
3. (law) a disagreement or difference between two parts of the same legal proceeding, which, to be effectual, ought to agree, -- as between the writ and the declaration, or between the allegation and the proof.


  similar words(1) 



 a variance 
for Vocabulary Exams of KPDS, YDS,UDS (in Turkey); and SAT in America
Change.
Concise English-Irish Dictionary v. 1.1
gan a bheith ag teacht le
JM Welsh <=> English Dictionary
Ymrafael = contention, variance
GLOSSARY OF ESOTERIC WORDS
1. Alteration, change of condition.
2. Disagreement, difference, discord, dissension, jarring, strife.
3. (Law.) Variation, want of conformity (as between the writ and the declaration, or between the allegation and the proof).
WordNet 2.0

Noun
1. an event that departs from expectations
(synonym) discrepancy, variant
(hypernym) deviation, divergence, departure, difference
2. discord that splits a group
(synonym) division
(hypernym) discord, dissension
3. the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
(hypernym) moment
(hyponym) standard deviation
(classification) statistics
4. a difference between conflicting facts or claims or opinions; "a growing divergence of opinion"
(synonym) discrepancy, disagreement, divergence
(hypernym) difference
(hyponym) allowance, leeway, margin, tolerance
5. the quality of being subject to variation
(synonym) variability, variableness
(hypernym) changeableness, changeability
(hyponym) variedness
6. an activity that varies from a norm or standard; "any variation in his routine was immediately reported"
(synonym) variation
(hypernym) activity
(derivation) deviate, vary, diverge, depart
Variance Definition from Business & Finance Dictionaries & Glossaries
Campbell R. Harvey's Hypertextual Finance Glossary
A measure of dispersion of a set of data points around their mean value. The mathematical expectation of the average squared deviations from the mean. The square root of the variance is the standard deviation.
Copyright © 2000, Campbell R. Harvey. All Rights Reserved.
Sean_Woo's Finance,GIS & Real Estate Glossary
1. the variance of the data is the average squared deviation of all values from the mean. Because the variance involves squared differences, the calculated variance is sensitive to unusually high or low values.
2. is the squared difference of the values of two points.
Variance Definition from Science & Technology Dictionaries & Glossaries
Bioglossary
Description: A statistical measure of the dispersion of a set of values about its mean.
Source: Specialized encyclopedia and dictionaries
© European Communities, 1995-2004
Telecommunication Standard Terms
In statistics, in a population of samples, the mean of the squares of the differences between the respective samples and their mean, expressed mathematically as:

where n is the number of samples, x i is the value of sample i , is the mean of the samples, and 2 is the variance. Note: The square root of the variance, , is the standard deviation.

Electronic Statistics Textbook
The variance (this term was first used by Fisher, 1918a) of a population of values is computed as:
2 = (xi-µ)2/N
where
µ is the population mean
N is the population size.
The unbiased sample estimate of the population variance is computed as:
s2 = (xi-xbar)2/n-1
where
xbar is the sample mean
n is the sample size.
See also, Descriptive Statistics .
Common Concepts in Statistics
The major measure of variability for a data set. To calculate the variance, all data values, their mean, and the number of data values are required. It is expressed in the squared unit of measurement. Its square root is the standard deviation. It is symbolised by for a population and for a sample.
Variance Definition from Computer & Internet Dictionaries & Glossaries
Vb Glossary 1.0
variance

The square of the standard deviation. It is a measure of the amount by which all values in a group vary from the average value of the group.
Variance Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
In probability theory and statistics, variance measures how far a set of numbers is spread out. (A variance of zero indicates that all the values are identical.) Variance is always non-negative: A small variance indicates that the data points tend to be very close to the mean (expected value) and hence to each other, while a high variance indicates that the data points are very spread out from the mean and from each other.

See more at Wikipedia.org...
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Variance Definition from Law Dictionaries & Glossaries
The 'Lectric Law Library
A disagreement or difference between two parts of the same legal proceeding, which ought to agree together. Variances are between the writ and the declaration, and between the declaration and the evidence.

When the variance is a matter of substance, as if the writ sounds in contract, and the other in tort, and e converso, or if the writ demands one thing or subject, and the declaration another, advantage may be taken of it, even in arrest of judgment; for it is the writ which gives authority to the court to proceed in any given suit, and, therefore, the court can have no authority to hear and determine a cause substaatially different from that in the writ. But if the variance is in matter of mere form, as in time or place, when that circumstance is immaterial, advantage can only be taken of it by plea in abatement.

A variance by disagreement in some particular point or points only between the allegation and the evidence, when upon a material point, is as fatal to the party on whom the proof lies, as a total failure of evidence. For example; the plaintiff declared in covenant for not repairing, pursuant to the covenant in a lease, and stated the covenant, as a covenant to "repair when and as need should require;" and issue was joined on a traverse of the deed alleged. The plaintiff at the trial produced the deed in proof, and it appeared that the covenant was to "repair when and as need should require, and at farthest after notice:" the latter words having been omitted in the declaration. This was held to be a variance, because the additional words were material, and qualified the effect of the contract. But a variance in mere form or in matter quite immaterial, will not be regarded.
   

This entry contains material from Bouvier's Legal Dictionary, a work published in the 1850's.
Courtesy of the 'Lectric Law Library.
Law Dictionary
In legal procedure, a discrepancy between what is charged or allegedand what is proved or offered as proof. In zoning law, an exemption from theapplication of a zoning ordinance or regulation permitting a use that variesfrom that otherwise permitted. The exception is granted by the appropriateauthority in special circumstances to protect against undue hardship wrought bystrict enforcement.
President's DNA Initiative Glossary
A measure of the spread of a distribution about its average value.
  
Source: The President's DNA Initiative ( About )
Variance Definition from Society & Culture Dictionaries & Glossaries
EPA Terms of Environment
Government permission for a delay or exception in the application of a given law, ordinance, or regulation.
Provided as a public service by the U.S. Environmental Protection Agency
Environmental Engineering (English ver.)
 A State with primacy may relieve a public water system from a requirement respecting an MCL by granting a variance if certain conditions exist. These are: 1) the system cannot meet the MCL in spite of the application of best available treatment technology, treatment techniques or other means (taking costs into consideration), due to the characteristics of the raw water sources which are reasonably available to the system, and 2) the variance will not result in an unreasonable public health risk. A system may also be granted a variance from a specified treatment technique if it can show that, due to the nature of the system's raw water source, such treatment is not necessary to public health. Also see exemption.
(Statistics) A measure of the spread or dispersion of a variable about its Mean or Arithmetic Mean value. The variance is calculated by taking the sum of the squares of the deviations, that is, the sum of the difference between the observed value and the series mean value, and dividing by the sample size (number of observations). The variance for a large data set (the population variance) is calculated as: s2 (sigma) = (xi :  x)2/n (sigma) = (xi :  x)2/n; where: xi is an individual observation; x is the mean of all observations; and n is the number of observations. xi is an individual observation; x is the mean of all observations; and n is the number of observations. For smaller data sets (typically less than 50) the sample variance (s2) is calculated by replacing n with n: 1 in this equation. The positive square root of the variance is called the Standard Deviation. Both the variance and the standard deviation are non-negative, by definition.
Variance Definition from Medicine Dictionaries & Glossaries
Glossary of Epidemiology Terms
A measure of the dispersion 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.