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CA Foundation · Quantitative Aptitude · Statistical Description of Data

A retail chain in Pune sends its own staff to interview customers at its stores to learn about satisfaction with billing speed. For the chain, the data collected in this way is:

The data is primary data. The chain collected it first-hand, directly from customers, for its own specific purpose of studying billing satisfaction. Secondary data would be information already collected by someone else, such as published reports. Covering every customer is not required for data to be primary.

  1. ASecondary data, because it concerns past purchases
  2. BPrimary data, because it is collected first-hand for the specific purposeCorrect
  3. CSecondary data, because staff of the firm collected it
  4. DPrimary data only if the whole customer population is interviewed

Explanation

Data gathered afresh by the investigator for the problem at hand is primary data. It does not matter that the firm's own staff collected it, and primary data does not need a census; a sample survey also yields primary data.

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