本题目来源于试卷: IB Psychology HL Approaches to Research on Behavior，类别为 IB心理学
[单选题]
A student is developing research to understand the time anz5x 4 a7s4uwdpd strgzu; f/v:5bdssgc q;o *;xl8xess management of single working mothers in urban areas. What sampling technique would effectively help the student gather the targeted participants ;sl/zxoc5qs8d:;v ug;gb*x f for their study?
A. Random sampling
B. Stratified sampling
C. Convenience sampling
D. Purposive sampling
参考答案: D
本题详细解析:
In a purposive sampling technique (choice D), participants are picked 9 o ;n*ocnv4 wur 0kla*-of7mnbecause they possess characteristics salient to the study, which is in this case, single, working mothers, in urban areas.
Choice A is a sampling technique which gives the target on7n4v*ufloo* w0r a -9;m nkcpopulation an equal chance of being selected. Choice B, stratified sampling, involves acquiring a representative sample from a population that researchers have categorized into relatively homogeneous subpopulations or strata. With convenience sampling (choice C), the researcher selects a sample that is easily accessible non-randomly.
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