Sample Size and Data Quality

Census.gov › American Community Survey › Methodology: Sample Size and Data Quality

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Methodology Main
Sample Size and Data Quality
2006 Content Test
Questionnaire Archive
- Summary of Questionnaire Changes
Special Data Studies

The quality measures provided in this section illustrate the steps the Census Bureau takes to ensure that American Community Survey data are accurate and reliable.

1. How large was the sample used to produce the ACS estimates?

Sample Size Definitions

2. How well does the ACS cover the population?

Coverage Rates Definitions

3. What was the response to the survey?

Response Rates:

Response Rates Definitions

4. How complete were the data used to produce a specific estimate?

Item Allocation Rates Definitions