Which of the following would indicate that purposive sampling was used correctly in a study that is being critiqued?
a. Sample members are determined by finding a designated number of subjects from each of several identified groups (men, women, high school graduates, etc.).
b. Subjects who have knowledge about the study topic are asked to participate in the study; those who agree become the sample.
c. The names of all possible subjects are put into a hat, and an adequate number are drawn out.
d. Volunteers are solicited from the entire population, and those who agree become subjects in the study.
ANS: B
Purposive sampling is when appropriate subjects are found by the researcher and asked to participate in the study.
Finding a designated number of subjects from several identified groups describes quota sampling.
Pulling names out of a hat a simple random sample.
Soliciting volunteers who are agreeable to participate in the study results in a convenience sample.
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