Search Data Services
Meta Search
search across all the following databases:
Data Catalog
Data and documentation
KnowledgeBase
Common questions and answers.
Resources
Entire collection of data resources.
Latest Data News
Lessons from North of the Border
Nerd Alert: Dictionary of Numbers
Data Services Knowledge Base
Q:
Where can I find out more information on the quality of the data used in the American Community Survey?
A:
Check the Direct Links below for information concerning data quality and accuracy for the ACS. Included are formulas for determining statistical significance, margin of error and coefficient of variation.