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Modification Made in 2007 ACS Weighting Methodology for Orange County, CA
The review of the 2007 ACS tabulations revealed large discrepancies between the final 2007 ACS estimate of total population and the 2007 population estimates from the Population Estimates Program for a set of places in Orange County, CA. These same areas showed a similar pattern of differences in the 2005 and 2006 ACS estimates. An additional adjustment to the weights was introduced in the weighting for Orange County to remove the source of the discrepancy. The adjustment was aimed at forcing the weighted distribution of housing units in the ACS sample to match the distribution of housing units on our sampling frame. The weighting adjustment was applied at the census tract level. As a result, it has eliminated most of the large discrepancies originally found for places in Orange County. This modification was also made to the 2006 ACS weighting methodology.
Page Last Revised - October 8, 2021
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