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Q19: A pretest of a questionnaire can help
Q25: Simple random sampling ensures that each element
Q35: In information technology, _ is data formatted
Q42: An experiment can have only one independent
Q49: In a test marked study, 206 out
Q52: What is a theory and a hypothesis,
Q55: Numerous methodological factors cause problems in estimating
Q59: _ can be used to determine the
Q60: In a graphic rating scale, a respondent's
Q71: If the interviewer's presence influences respondents to