2019 · Q66
The data collected from which one of the following methods is not a primary data?
Elementary MathematicsStatistics
- ABy direct personal interviews
- BBy indirect personal interviews
- CBy schedules sent through enumerators
- DFrom published thesis
Explanation
Direct personal interviews, indirect interviews and enumerator schedules all collect data firsthand — primary data. A published thesis reuses data collected earlier, which is secondary data, so it is the odd one out.