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cluster sampling

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia, Hutchinson 0.01 sec.
cluster sampling [′kləs·tər ‚sam·pliŋ]
(statistics)
A random sampling plan in which the population is subdivided into groups called clusters so that there is small variability within clusters and large variability between clusters.


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Cluster sampling to assess immunisation coverage: a review of experience with simplified sampling method.
Using cluster sampling by geographic region, 2,654 questionnaires were distributed to members of the Chartered Society of Physiotherapy and the Irish Society of Chartered Physiotherapists (30,000 members total).
A fixed cluster sampling plan was used with two pre-selection criteria: (1) individuals must be at least 18 years of age and (2) individuals must have daily access to the Internet either from home computer, business computer or both.
 
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