Paper 1 · Research Aptitude
Which of the following terms best describes data that were originally collected at an earlier time by a different person for a different purpose?
APrimary data
BSecondary data ✓ Correct
CExperimental data
DNominal data
Correct answer: (B) Secondary data — Data collected earlier by someone else for another purpose are secondary data, so that is the answer.
Explanation
★Data collected earlier by someone else for another purpose are secondary data, so that is the answer.
★Secondary data are data that already exist, gathered by others for their own reasons.
★So when a researcher reuses such earlier data, they are secondary data for his study.
★Primary data, by contrast, are collected first-hand by the researcher for the present study.
★Experimental data are produced by an experiment, not simply borrowed from earlier work.
★Nominal data refers to a level of measurement, so already-collected reused data are secondary data.
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