Diierences between the 1990 and 2000 Census Adjustment Plans, and Their Impact on Error
نویسنده
چکیده
A revised plan for the 2000 Decennial Census was announced in a 24 February 1999 Bureau of the Census publication 99 and a press statement b y K. Prewitt, Director of the Bureau of the Census 39. Census 2000 will include counts and adjusted" counts. The adjustments involve complicated procedures and calculations on data from a sample of blocks, extrapolated throughout the country to demographic groups called post-strata." The 2000 adjustment plan is called Accuracy and Coverage Evaluation ACE. ACE is quite similar to the 1990 adjustment plan, called the Post-Enumeration Survey PES. The 1990 PES fails some plausibility c hecks 4, 1 2 , 444 and probably would have reduced the accuracy of counts and state shares 3, 4. ACE and PES diier in sample size, data capture, timing, record matching, post-stratiication, methods to compensate for missing data, the treatment o f m o vers, and ACE improves on PES in a number of ways, including using a larger sample, using a simpler model to assign match probabilities" to records with insuucient data, and incorporating mail-back return rates into some post-strata. Nonetheless, ACE shares the most serious problems of PES. The Be Counted" program, census response submission over the internet, computer unduplication of records, the treatment o f m o vers 10, 2 5 , a new deenition of correct address," more limited search for matching records 35, the use of optical character recognition OCR to capture data 7, 8, 9 , 1 0 , 3 1 , the data collection schedule 10, and the assignment of residence probabilities" to some sample records 6, 322, are likely to make ACE less accurate than the 1990 PES.
منابع مشابه
The 1990 and 2000 Census Adjustment Plans
A revised plan for the 2000 Decennial Census was announced in a 24 February 1999 Bureau of the Census publication and a press statement b y K. Prewitt, Director of the Bureau of the Census. Census 2000 will include counts and adjusted" counts. The adjustments involve complicated procedures and calculations on data from a sample of blocks, extrapolated throughout the country to demographic group...
متن کاملThe University of Chicago Department of Statistics
The year 2000 U. S. Census has been inundated by political and legal controversy. This talk will survey the current plans for Census 2000 from my perspective as a statistician. From this perspective the viability and desirability of these plans will be discussed. Some relevant evidence in this regard will be cited from the 1990 census and from the 1998 Dress Rehearsal census.
متن کاملPlanning for the Census in the Year 2000
Considering the di culties, the Census Bureau does a remarkably good job at counting people. There are two current techniques for evaluating or adjusting the census: (i) demographic analysis uses administrative records to make independent population estimates, which can be compared to census counts; (ii) data from an independent sample survey can be used to estimate population coverage. If ther...
متن کاملCensus Adjustment: Statistical Promise or Statistical Illusion?
The census has been taken every ten years since 1790. Counts are used to apportion Congress and redistrict states. Furthermore, census data are the basis for allocating federal tax money to cities and other local governments. For such purposes, the geographical distribution of the population matters rather than counts for the nation as a whole. Data from 1990 and previous censuses suggested the...
متن کامل