# variance

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Related to variances: standard deviation

## Variance

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.

## Variance

1. In accounting, the difference between the estimated and actual cost of a project or other operation.

2. In risk, the average deviation of a set of data points from their mean.

## variance

A statistical measure of the variability of measured datum from the average value of the set of data. A high variance, indicating relatively great variability, also indicates that the average is of minimal use in projecting future values for the data. Standard deviation is the square root of variance. Financial analysts use both statistical measures to weigh investment risk. Compare covariance. See also risk.

## variance

1. the difference between budgeted and actual results (see BUDGETING), or between STANDARD COSTS/revenues and actual costs/revenues. Variances can be:
1. adverse or negative when actual revenues fall short of budget or standard, or when actual costs exceed budget or standard;
2. favourable or positive when actual revenues exceed budget or standard, or when actual costs are less than budget or standard.
3. a measure of variation within a group of numerical observations, specifically the average of the squared deviations of the observations from the group AVERAGE.

See STANDARD DEVIATION.

## variance

Permission to use a property in a manner that does not meet current zoning requirements.In order to gain a variance,the property owner usually has to show a hardship on the property—not on the owner—if the requested use is not allowed. It is considered a hardship if the property will otherwise remain vacant or if a structurally sound improvement must be demolished to allow some other use. Buyers with a signed purchase contract can usually petition for a variance; this is commonly one of the steps in a due diligence plan that must be completed in a satisfactory manner before the buyer will purchase property.

References in periodicals archive ?
Then, after time passes, the actual numbers are determined and the differences or variances between the standards and actual numbers are isolated.
SOME EQUIPMENT IS NOT AUTHORIZED A VARIANCE BECAUSE THE SERVICE IS CONSIDERED TOO CRITICAL.
Note that in column 2 of Table 3, seasonality caused the quarterly volume variances that were offset by the end of each year via a netting of this component's underapplied and overapplied fixed manufacturing overhead over the four quarters.
The estimator matches all of the theoretical variances and autocovariances implied by the model in equations [zeta], through 9 to their empirical counterparts.
Employers can request a variance for many reasons, including not being able to fully comply on time with a new safety or health standard because of a shortage of personnel, materials, or equipment.
But beware: Managed care payment compliance with its many contract variances cannot be maintained by software alone.
The overall sample transitory variance is the average of these variances.
Open your spreadsheet to the CM IS tab; that's where we put the three versions of the Contribution Margin Income Statement that we'll use to calculate Bob's cost variances.
Last month, the developers threatened to withdraw the project when board member Dan Heney said he was unwilling to appprove the variances without an independent peer review of American Pro Wind's studies.
We determined the number of unintended medication variances and the type of variance, as well as the action taken by the physician or designate to rectify each variance.
Since negative variances are generally bad news, it appears that I'm one mile of track/one month/\$1 million behind schedule.

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