variance

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Related to variances: standard deviation

deviation

 [de″ve-a´shun]
1. a turning away from the regular standard or course.
2. in ophthalmology, strabismus.
3. in statistics, the difference between a sample value and the mean.
axis deviation an axis shift in the frontal plane, as seen on an electrocardiogram. There are three types: Left, from −30° to −90°; Right, from +90° to +180°; and Undetermined, which may be either extreme left or extreme right, from −90° to +180°.
conjugate deviation dysfunction of the ocular muscles causing the two eyes to diverge to the same side when at rest.
sexual deviation sexual behavior or fantasy outside that which is morally, biologically, or legally sanctioned, often specifically one of the paraphilias.
standard deviation (SD) the dispersion of a random variable; a measure of the amount by which each value deviates from the mean. It is equal to the square root of the variance. For data that have a normal distribution, about 68 per cent of the data points fall within (plus or minus) one standard deviation from the mean and about 95 per cent fall within (plus or minus) two standard deviations. Symbol σ.
ulnar deviation a hand deformity, seen in chronic rheumatoid arthritis and lupus erythematosus, in which swelling of the metacarpophalangeal joints causes the fingers to become displaced to the ulnar side. Called also ulnar drift. See illustration.
 Ulnar deviation (ulnar drift) of the metacarpophalangeal joint, a characteristic sign of rheumatoid arthritis. From Pedretti and Early, 2001.

var·i·ance

(var'ē-ăns),
1. The state of being variable, different, divergent, or deviate; a degree of deviation.
2. A measure of the variation shown by a set of observations, defined as the sum of squares of deviations from the mean, divided by the number of degrees of freedom in the set of observations.

variance

A measure of the variability in a sample or population, which is calculated as the mean squared deviation (MSD) of the individual values from their common mean. In calculating the MSD, the divisor n is commonly used for a population variance and the divisor n-1 for a sample variance.

var·i·ance

(var'ē-ăns)
1. The state of being variable, different, divergent, or deviate; a degree of deviation.
2. A measure of the variation shown by a set of observations, defined as the sum of squares of deviations from the mean, divided by the number of degrees of freedom in the set of observations.

variance (s2)

(in statistics) the variation around the ARITHMETIC MEAN. It is calculated as the average squared deviation of all observations from their mean value. The square root of variance is the STANDARD DEVIATION
References in periodicals archive ?
Meanwhile, he said financial years 2016/2017, 2017/2018 and 2018/2019 administrative variances were at P201 612, P1062 471 and P9 309 762 respectively.
In Kansas City, the BZA has the responsibility to "hear and decide all matters referred to it or upon which it is required to pass under [the] zoning and development code." (94) When the KC-BZA addresses zoning variances, it must do so with the intent of "address[ing] unnecessary hardships or practical difficulties resulting from strict application of zoning-related standards." (95) The KC-BZA has the discretion to approve variances "when they find substantial evidence in the official record that" three review criteria exist.
Log likelihoods and information criteria: The order of fit for the random effects was kept constant to describe the best variance formation to representation the residual variances.
Allan Variance. The calculation of Allan variance is based on the method of cluster analysis.
A total of ten models including repeatability and different RRMs with various orders of Legendre Polynomials for additive and permanent environment effects and residual variance structure were fitted.
Sometimes we are interested in knowing the variance of the estimates of the parameters of the signal detection theory (SDT; Green & Swets, 1966; MacMillan & Creelman, 2005; Wickens, 2001).
The objectivewas to approximate the variance of population (EQUATION) with the source of a random sample of sizen, drawn from the population.
The classes of residual variances were formed to improve the model fit, considering the changes in the temporary environment variances that occur at different stages of lactation : crescent, peak and decline, as reported by LOPEZ-ROMERO et al.
There are three components of this formula - the first and second are the product of the asset's squared weight and its variance and the third line is the product of the correlation between the assets and square roots of their variance.
Consider me to be your hired accountant who has come to do your standard costing variances. Since standard costing is not required, but is chosen by businesses for control purposes, it looks as if your business has grown in size to where you have decided that using standard costing will be helpful.' Students are then directed to look at the first line in Exhibit 2 which states, '____ (Insert your name) Company makes many different products, including its very popular.____' They are instructed to put their names on the first blank and then are asked what very popular product their company makes.
The developers seek two variances, or exemptions from town zoning law.
For this reason, DA Pam 750-8, The Army Maintenance Management System (TAMMS) Users Manual, allows units a 10 percent variance with scheduled service dates.