A common method for selecting representative samples is to select them.
Correct answer: A. randomly from the larger population
- A. randomly from the larger population
- B. strictly from volunteers
- C. by threatening or coercing institutionalized populations
- D. from confidential lists of mall order firms
Explanation
Random selection gives members of the larger population a known chance of being included, improving the likelihood that the sample represents that population. Volunteer-only samples can be biased because volunteers may differ systematically from nonvolunteers.
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