population variance

population variance

[‚päp·yə′lā·shən ′ver·ē·əns]
(statistics)
The arithmetic average of the numbers (v1-v̄)2,…, (vN -v̄)2, where vi are numbers obtained from a population with N members, one for each member, and v̄ is the population mean.
References in periodicals archive ?
Three ratio type estimators were proposed for population variance utilizing the single auxiliary variable assuming the transformed population for adaptive cluster sampling, in presented study.
Monitoring population variance, larval samplings and thriving mosquito,
where j is sampling fraction at jth phase, jx is sample mean of auxiliary variable at jth phase, 2xS is population variance of auxiliary variable, 2yS is variance of study variable and xyS is covariance between X and Y.
The input set with the highest uncertainty, population variance diversity schedules, shows yearly energy use from -0.
We evaluate a statistical framework for use of a single dominant or recessive genetic variant to partition a sample into 2 groups using standard information likely to be reported in the scientific literature or available to a laboratory director, such as the difference in mean level of the analyte, the SD of the analyte, and the percentage of population variance attributed to a genetic variant.
Despite its rising popularity, a population variance for SIG has never been established and without such a measure, a reference range cannot be quoted (5).
However, a reasonable estimate of the "true" population variance can usually be obtained without resorting to a large number of measures per case except in those rare instances when we need to make definitive judgments about individual cases (e.
1% of the total variance, while among population variance contributed only 25.
In order to calculate population variance, the legislature must begin with average population per district, dividing the total population throughout the region by the number of districts.
The simple definition of a design effect is the ratio of the estimated population variance taking the complex design features into account over the estimated population variance based on the same sample and assuming a simple random sample.
Likewise, the variance will usually be close to the population variance, etc.
This population variance occurs as a result of geographic differences, program selection criteria, available program services, the availability of alternatives such as surgery or adoption, socioeconomic factors, as well as patient insurance coverage issues.
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