Which of the following is an example of qualitative data? MCQ with Answer and Explanation

Explanation:
Data obtained from published reports like NSSO is secondary data because it was collected by another agency for a different purpose and is being reused by the researcher.

Explanation:
Life expectancy is derived from age-specific mortality rates and reflects overall mortality conditions.

Explanation:
De facto census records individuals at their location on the census reference night, regardless of usual residence, useful for service planning but less suitable for administrative purposes.