Explain likely differences between administrative datasets and datasets gathered from experimental studies. What are likely problems encountered with administrative data? How do experimental methods help alleviate these problems? What problem do they bring?

Explain likely differences between administrative datasets and datasets gathered from experimental studies. What are likely problems encountered with administrative data? How do experimental methods help alleviate these problems? What problem do they bring?



Advantages:
- Cost
- Large coverage of population
- Captures individuals who may not respond to surveys
- Regularly updated, allow consistent time-series to be built-up

Disadvantages:
- Restricted to data collected for administrative purposes (limited to administrative definitions. For instance: incomes of a married couple, not individuals, which can be more useful)
- Lack of researcher control over content
- Missing or erroneous entries
- Quality issues (addresses may not be updated or a postal code is provided only)
- Data privacy issues
- Underdeveloped theories and methods (sampling methods...)

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