cluster sample

a method of SAMPLING which selects from groups (clusters) existing in the parent population, rather than assembling a RANDOM SAMPLE. This tends to be quicker and cheaper, but may lead to a BIASED SAMPLE if the clusters are not representative of the parent population. For example, polls taken of attitudes to government policy may be carried out in selected areas of the country thought to be representative, but, because of local political dynamics, this may not be the case.

单词	cluster sample
释义	cluster sample cluster sample a method of SAMPLING which selects from groups (clusters) existing in the parent population, rather than assembling a RANDOM SAMPLE. This tends to be quicker and cheaper, but may lead to a BIASED SAMPLE if the clusters are not representative of the parent population. For example, polls taken of attitudes to government policy may be carried out in selected areas of the country thought to be representative, but, because of local political dynamics, this may not be the case. cluster sample clus·ter sam·ple each sampling unit in a group of individuals.
随便看	jisc innovation forum jisco jiscon jisc technology application programme jisc technology applications programme jisc usage surveys trends in electronic information services jisd jise jisea jisedai no fansub jisf j isfred i hofbauer jisga jish jisha jishs jisi jis (japanese industrial standards) draft template jiskra of brandys, jan jiskra of brandýs, jan jisl jisle jism jisms jisne

cluster sample

cluster sample

cluster sample

clus·ter sam·ple