systematic sampling

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systematic sampling

[‚sis·tə′mad·ik ′sam·pliŋ]
(mining engineering)
Extracting samples at evenly spaced periods or in fixed quantities from a unit of coal.
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The first was a stratified systematic sample collected by the National Science Foundation in 1982 of more than 100,000 respondents to the 1980 census who had reported they were scientists.
Account Recorded Value Cumulative 1 $ 460 $ 460 2 1,626 2,086 3 1,255 3,341 4 677 4,018 Although the sample items may be chosen randomly, systematic sample selection is often used in conjunction with MUS.
Our sixth indicator was the percentage of lines mentioning particular girls or women, women's issues or using feminine personal pronouns out of all lines in a 1-in-10 systematic sample of pages.
This removed the subsampling component of the two-stage sampling design reducing it to an unaligned systematic sample, which is often superior to stratified random sampling (Cochran 1977).
The systematic sample with probability proportional to size design described above was applied independently in each subgroup.
To begin answering this question, we will first look in more detail at current treatments of the relationship of women and witchcraft in popular culture and then evaluate them in light of both a systematic sample of cases drawn from the archives of the Duchy of Wurttemberg and a recent reassessment of the most common form of malefic magic associated with witchcraft.
Using a systematic sample, it analyzes 209 vignettes in forty X- to XXX-rated videos commercially available from a national chain in the local market.
In this way we were able to pull a systematic sample without having to do a lot of counting.
Design-based inference and model-based inference are two conceptual frameworks for tackling estimation of variance of the mean in a systematic sample. This paper reports use of the geostatistical estimation variance [[[sigma].sup.2].sub.E] with the model-based approach.
We frequently use a systematic sample rather than a simple random if we have access to a list of the population.
FMS are based on information from death certificates submitted by all 50 states and the District of Columbia, and CMS data provide national estimates based on a 10% systematic sample of death certificates received monthly by the vital statistics offices in the 50 states, the District of Columbia, and New York City.
Beth Rogers and her White Water colleague, Dave Tiller, conducted a systematic sample of nesting birds in the spring of 1991.

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