A standard-format question does not offer a "don't know" choice.
Correct Answer:
Verified
Q18: Which of the following might interfere with
Q19: Dr.Mottle asks respondents if they have an
Q20: The lowest cost format for surveys is
A)web
Q21: Why does an interviewer use probes?
Q22: What is the difference between an opinion
Q24: What is the difference between an open-ended
Q25: A contingency question really has three questions
Q26: What is a contingency question?
A)a two-part question
Q27: What three questions does a researcher ask
Q28: An interviewer needs to control the interview
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