Mathematics, 12.12.2019 19:31 paigejohnson955

Why might a researcher choose purposive sampling over systematic sampling? purposive sampling is always cheaper. b. external validity is not vital to the researcher's study. c. only purposive sampling allows the researcher to study a particular type of participant. d. the researcher does not have to specify a population of interest ahead of time.

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Why might a researcher choose purposive sampling over systematic sampling? purposive sampling is al...