Statistical Description of DataPYQ Nov 18Question 2613 of 295
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Data are said to be ______ if the investigator himself is responsible for the collection of the data.

Options

APrimary data
BSecondary data
CMixed of primary and secondary data
DNone of these
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Correct Answer

✅ Option a — Primary data

All Options:

  • APrimary data
  • BSecondary data
  • CMixed of primary and secondary data
  • DNone of these

Detailed Solution & Explanation

Primary data refers to the first-hand information collected by the investigator or researcher themselves directly from the source for a specific research project or statistical inquiry. Since the investigator is directly responsible for the collection of this data, it is original in character. In contrast, secondary data is data that has already been collected, compiled, and published by some other agency or person. Therefore, when the investigator is responsible for collecting the data, it is defined as primary data. While the original key lists Option D, the mathematically and conceptually correct choice is Option A. Hence, **Option A** is the correct answer.

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