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An example of cluster sampling is area sampling or geographical cluster sampling.Each cluster is a geographical area in an area sampling frame.Because a geographically dispersed population can be expensive to survey, greater economy than simple random sampling can be achieved by grouping several respondents within a local area into a cluster.
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For this reason, cluster sampling requires a larger sample than SRS to achieve the same level of accuracy – but cost savings from clustering might still make this a cheaper option. Cluster sampling is commonly implemented as multistage sampling. This is a complex form of cluster sampling in which two or more levels of units are embedded one ...
The inter-cluster distance d(i,j) between two clusters may be any number of distance measures, such as the distance between the centroids of the clusters. Similarly, the intra-cluster distance d '(k) may be measured in a variety of ways, such as the maximal distance between any pair of elements in cluster k. Since internal criterion seek ...
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Cluster, the 1971 eponymous album by the band Cluster; Cluster (band), a German electronic group "Cluster", a track from the album Ben Bu Sarkiyi Sana Yazdim by Cem Adrian "Cluster", a song by P-Model from the album Big Body; Cluster One, the first track on Pink Floyd's 1994 album The Division Bell
Vietnam Fisheries Surveillance is allowed to use: [5] Handguns , submachine guns , assault rifles (noticeably the 7.62mm AK ), machine guns (noticeably the 12.7mm DShK / NSV and 14.5mm KPV ). Appropriate to be used with remote controlled weapon stations [ 6 ] [ 7 ] and any suitable ammunition to the armaments, however the caliber is limited at ...
A Touch of Home: The Vietnam War's Red Cross Girls; A Yank in Viet-Nam; A'ou language; A. Peter Dewey; A2 Helmet; A41 Factory VNS-41; ABC International School; ABU TV Song Festival 2013; ACG International School Vietnam; AH1; AH17; ANESVAD Foundation; APEC Vietnam 2006; APEC Vietnam 2017; ARC Riders; ARCT-154; ASEAN–China Free Trade Area ...