Data Clean Up
This page provides general documentation of issues in data clean up.
Underestimate / Overestimate Population Data
Issue
Number of population of certain ages (usually early ages) is underestimated/ overestimated.
Background
In some countries, such as Taiwan, parents do not report their children until the children have name, which may take several years.
Detection
Check the survival rates by single age group. If the values are more than one, there may be some problem.
Remedy:
Comments about Under-estimate Population data remedy: