JSM 2004 - Toronto

Abstract #301006

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Activity Number: 309
Type: Contributed
Date/Time: Wednesday, August 11, 2004 : 8:30 AM to 10:20 AM
Sponsor: Section on Survey Research Methods
Abstract - #301006
Title: Methodological Lessons from Census 2000 Coverage Error Measurement
Author(s): Mary H. Mulry*+
Companies: U. S. Census Bureau
Address: 2884 Manorwood Trail, Fort Worth, TX, 76109,
Keywords: dual system estimator ; overcount ; nonsampling error ; undercount
Abstract:

This paper synthesizes the methodological lessons from the Census Bureau's program to measure coverage error in Census 2000 from the Accuracy and Coverage Evaluation Survey (A.C.E.). The Census Bureau decided to revise the original A.C.E. dual system estimates (DSEs) because of the discovery of a large number of undetected duplicate enumerations. These revised estimates, known as A.C.E. Revision II, included adjustments for census duplicates as well as measurement errors and showed a net undercount rate of -0.5%, an overcount, in the census count of 281,421,906. Since the A.C.E. and the A.C.E. Revision II estimates each had an evaluation program, there is a wealth of information about the survey design, data collection, data processing, and estimation methodologies used to obtain both sets of estimates. In addition, this information provides guidance for the planning of Census 2010 and for the planning of the program that evaluates the census coverage.

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