Data Quality and the ACS Introduction to the ACS Aggregator Lisa Neidert January 18, 2012 PSC Data Workshop Ann Arbor, MI.
Download ReportTranscript Data Quality and the ACS Introduction to the ACS Aggregator Lisa Neidert January 18, 2012 PSC Data Workshop Ann Arbor, MI.
Data Quality and the ACS Introduction to the ACS Aggregator Lisa Neidert January 18, 2012 PSC Data Workshop Ann Arbor, MI Synopsis Census long-form data were not as good as you thought ACS data are worse Collapse cells or combine geographies Tool: ACS Aggregator [Beta] ACS Data Quality Issues Sample Size 1 in 8 instead of 1 in 6 Mixed Mode Non-response is a ~1 in 3 sample Uneven response across geography Population Controls Only at state/county Long-form data had short-form Geographic Variation in ACS mail response: by pseudo county (2006-2008) Census Bureau Solutions Increase sample size 3.4 million households Re-distribute sample Small census tracts + Low response areas + Large census tracts; high response areas – Research Education PSC ACS Aggregator Helps users re-calibrate margins of error after combining geographies or collapsing cells Statistical Review Compass Series: Technical Appendix ACS Aggregator Practice Data Seattle: Capitol Hill Neighborhood Table B11001 Combine Geographies Enter Name, Estimate, MOE for all geographies Collapse Cells Enter Name, Estimate, MOE for each column Geographies will be repeated Questions/Comments E-mail [email protected]