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CA Foundation · Quantitative Aptitude · Statistical Description of Data

A researcher in Ahmedabad wants to study household spending, and she collects the data by looking up figures that the National Statistical Office has already published in its reports. For her study, these data are:

The data are secondary, because the National Statistical Office originally collected and published them, and the researcher is only using existing figures. Primary data are those collected afresh by the investigator herself for the specific study, which is not the case here.

  1. APrimary data, because she is using them for the first time
  2. BSecondary data, because they were originally collected by another agencyCorrect
  3. CPrimary data, because they are in numerical form
  4. DSecondary data, because they were collected by sampling

Explanation

Data gathered by one agency and then used by another investigator are secondary data. The fact that she uses them for the first time does not make them primary, because primary data must be collected afresh by the investigator for her own purpose. Numerical form and sampling are not what distinguishes primary from secondary data.

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