In statistics, cluster sampling is a sampling plan used when mutually homogeneous yet internally heterogeneous groupings are evident in a statistical population...
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clustering might still make this a cheaper option. Cluster sampling is commonly implemented as multistage sampling. This is a complex form of cluster...
56 KB (7,602 words) - 16:44, 14 July 2025
Design effect (redirect from Effective sample size)
cluster sampling we can use a two stage sampling in which we sample each cluster (which may be of different sizes) with equal probability, and then sample from...
97 KB (13,071 words) - 23:31, 11 July 2025
of cluster sampling because it is a type of sampling which involves dividing the population into groups (or clusters). Then, one or more clusters are...
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Environmental monitoring (redirect from Environmental sampling)
primary types of soil sampling are grab sampling and composite sampling. Grab sampling involves the collection of an individual sample at a specific time...
58 KB (7,039 words) - 09:45, 17 July 2025
intrinsic similarities Cluster sampling, a sampling technique used when "natural" groupings are evident in a statistical population Cluster graph, in graph theory...
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Nonprobability sampling is a form of sampling that does not utilise random sampling techniques where the probability of getting any particular sample may be calculated...
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sampling is small enough to make efficiency less important than simplicity. If these conditions do not hold, stratified sampling or cluster sampling may...
12 KB (1,788 words) - 20:49, 28 May 2025
Address-Based Sampling. Within probability sampling, there are specialized techniques such as stratified sampling and cluster sampling that improve the...
14 KB (1,725 words) - 10:21, 20 March 2025
mortality from violence... In research circles, random cross-sectional cluster sampling survey methods are deemed to be a more rigorous epidemiological method...
189 KB (17,094 words) - 02:51, 1 August 2025
Mortality rate (section Sampling)
multistage sampling), cluster sampling is the approach most often used by epidemiologists. In areas of forced migration, there is more significant sampling error...
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Stratified randomization (category Sampling (statistics))
during sampling. This sampling method should be distinguished from cluster sampling, where a simple random sample of several entire clusters is selected...
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Stratified sampling Cluster sampling distance sampling Multistage sampling Nonprobability sampling Slice sampling Sampling bias Sampling design Sampling distribution...
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Outline of statistics (section Sampling)
Statistical survey Opinion poll Sampling theory Sampling distribution Stratified sampling Quota sampling Cluster sampling Biased sample Spectrum bias Survivorship...
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[better source needed] Sometimes due to data availability, it is only possible to do cluster sampling. For example, if wanting to survey households, it may be that there...
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similar sampling techniques like stratified and cluster sampling, LQAS provides less information but often requires substantially smaller sample sizes....
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Lancet surveys of Iraq War casualties (redirect from Lancet survey of mortality after the 2003 invasion of Iraq:a cross-sectional cluster sample survey)
the Fallujah cluster. While the authors argued that the Fallujah cluster's inclusion could be justified as a normal part of the sampling strategy (the...
96 KB (12,442 words) - 11:49, 29 July 2025
Water quality (redirect from Water sampling)
contaminant. Sampling methods include for example simple random sampling, stratified sampling, systematic and grid sampling, adaptive cluster sampling, grab...
48 KB (5,900 words) - 02:27, 2 August 2025
In survey methodology, probability-proportional-to-size (pps) sampling is a sampling process where each element of the population (of size N) has some...
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This sampling scheme does not require more samples for more dimensions (variables); this independence is one of the main advantages of this sampling scheme...
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The Phoenix Cluster (SPT-CL J2344-4243) is a massive, Abell class type I galaxy cluster located at its namesake, southern constellation of Phoenix. It...
17 KB (1,730 words) - 13:52, 1 August 2025
Cluster analysis, or clustering, is a data analysis technique aimed at partitioning a set of objects into groups such that objects within the same group...
75 KB (9,510 words) - 17:19, 16 July 2025
In statistics, stratified sampling is a method of sampling from a population which can be partitioned into subpopulations. In statistical surveys, when...
11 KB (1,525 words) - 08:46, 29 July 2025
with pests present and q = 1 − p. Green derived another sampling formula for sequential sampling based on Taylor's law D = ( a n 1 − b T b − 2 ) 1 / 2 {\displaystyle...
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computer cluster is a set of computers that work together so that they can be viewed as a single system. Unlike grid computers, computer clusters have each...
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African refugees: estimates from a cross-sectional survey using random cluster sampling". BMC Pediatrics. 22 (1): 518. doi:10.1186/s12887-022-03576-9. ISSN 1471-2431...
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clusters in which each observation belongs to the cluster with the nearest mean (cluster centers or cluster centroid). This results in a partitioning of the...
62 KB (7,772 words) - 16:49, 3 August 2025
smaller-sized groups ("clusters") and where the sampling and/or treatment assignment is correlated within each group. Clustered standard errors are widely...
10 KB (1,332 words) - 12:26, 24 May 2025
explain certain non-random measurements of peculiar velocity of galaxy clusters. The actual measured velocity is the sum of the velocity predicted by Hubble's...
15 KB (1,536 words) - 20:53, 26 January 2025
Social research (section Sampling)
sample is referred to as sampling. Sampling methods may be either random (random sampling, systematic sampling, stratified sampling, cluster sampling)...
21 KB (2,576 words) - 10:22, 20 March 2025