Use of 2010 census
- 1. American Community Survey When Will the 2010 Census Kick In?
- 2. Population Weighting and Controls • Every sample survey has to have a weighting scheme so that respondents represent the “total” population • The ACS scheme is very complicated – Sampling rate – Interview rate – Demographic characteristics • Control to the population universe
- 3. Current Population Controls • Annual Census Bureau Estimates • Methodology based on the 2000 Census • Accuracy declines further from base date • Limited characteristics – Total Population at the County Level – Age/Race and Household characteristics
- 4. End of Decade “Error of Closure”
- 5. Census Estimates Terminology • Postcensal Estimates • Released annually • Identified by their vintage (release year) • Entire time series back to the previous census is recalculated for each vintage • Intercensal estimates • Prepared once in the decade with new Census results • Covers the time series from one census to the next census (e.g., Census 2000 to 2010 Census) • Smoothes out any error present in the postcensal estimates “Error of Closure”
- 6. When Does it Happen?