2009 · Q2
Examples of data are given below:
- IInformation on households collected by an investigator by door-to-door visits.
- IIData on the percentage of literates, sex-wise, for the different districts of a state collected from records of the census of India.
- IIIGeneral Information about families, collected by telephonic interviews.
Which one of the following in respect of the above is correct?
Elementary MathematicsStatistics
- AI and II are primary data
- BI and III are primary data
- CII and III are primary data
- DI, II and III are primary data
Explanation
I and III are primary data; II (census) is secondary.