________ is a nonprobability sampling technique that attempts to obtain a sample of convenient elements and leaves the selection of sampling units primarily to the interviewer.
A.
Convenience sampling
B.
Snowball sampling
C.
Simple random sampling
D.
Systematic sampling
E.
Window sampling
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参考答案:
举一反三
【单选题】根据下列文字,回答下列各题: Directions: Read the texts from a magazine article in which five people gave their opinions on work arwl family.For Questions 61 to 65, match the name of the persons to one of the state...
A.
My child is the focus of my life.
B.
Family and work are both important for women.
C.
Men should be asked to return to their paternal duties.
【简答题】根据下列材料,请回答下列各题 Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered36 to 40. For each question or statement there are 4 choices marked A., B., ...