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Solutions Manual for Sampling Design and Analysis, 3e by Sharon Lohr
1.1 Target population: Unclear, but presumed to be readers of Parade magazine. Sampling frame: Persons who know about the telephone survey. Sampling unit = observation unit: One call. (Although it would also be correct to consider the sampling unit to be a person. The survey is so badly done that it is difficult to tell what the units are.) As noted in Section 1.3, samples that consist only of volunteers are suspect. This is especially true of surveys in which respondents must pay to particip...
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1.1 Target population: Unclear, but presumed to be readers of Parade magazine. Sampling frame: Persons who know about the telephone survey. Sampling unit = observation unit: One call. (Although it would also be correct to consider the sampling unit to be a person. The survey is so badly done that it is difficult to tell what the units are.) As noted in Section 1.3, samples that consist only of volunteers are suspect. This is especially true of surveys in which respondents must pay to particip...