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Section 7.4 Section 7.4

Section 7.4 - PowerPoint Presentation

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Uploaded On 2016-02-29

Section 7.4 - PPT Presentation

Cautions about Sampling Special Topics Undercoverage Sample surveys of large human populations require more than a good sampling design We need an accurate and complete list of the population Because such a list is rarely available most samples suffer from some degree ID: 235524

bias sample sampling nonresponse sample bias nonresponse sampling population surveys answer occurs response question undercoverage questions areas vod groups

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