英语词汇“cluster sample”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

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	patient engagement in research scale patient environment action group patient environment action team patient environment action team report patient episode patient episode database for wales patient evacuation and mortality report patient evacuation contingency kit patient evacuation coordination cell patient evaluation and management system patient evaluation & conferencing system patient expectations and satisfaction with prenatal care patient experience patient experience and public involvement patient experience design patient experience evaluation report system patient family educational advisory committee patient-family learning centre patient file patient financial assistance program patient financial counselor patient financial services patient financial services system patient focus and public involvement patient-focused care

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cluster sample