A researcher studying literacy rates in rural India collects data by personally visiting villages and conducting face-to-face interviews. This approach exemplifies:
A.Secondary data collection through indirect oral investigation
B.Primary data collection through mailed questionnaires
C.Secondary data collection from census reports
D.Primary data collection through direct personal investigation
Explanation:
Direct personal investigation involves the investigator collecting data firsthand through direct interaction with respondents, which is a method of primary data collection.
Explanation:
Demographic questions, especially sensitive ones like income or caste, are often placed at the end to avoid respondent discomfort early in the survey, which could lead to dropouts.
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