Which among the following is a secondary source of data?

The correct answer is National Sample Survey Organization data.

Key Points

Secondary data:

• It refers to data that is collected by someone other than the primary user.
• It is basically Past data.
• Common sources of secondary data are
  • Census data,
  • tax records data
  • Information collected by government departments, like National Sample Survey Organization data  or Election commission of India
  • Organizational records and data that was originally collected for other research purposes.

Additional Information

 Primary data

• It refers to the first-hand data gathered by the researcher himself
• It is always specific to the researcher's needs.
• It is available in the Crude form or Raw form.
• Its examples include
  • Surveys, 
  • Participants' diary 
  • observations,
  • experiments, 
  • Archival data 
  • questionnaires, 
  • Oral narratives 
  • personal interviews, etc.