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Calculating The Estimates And Weights For The Vacancy Rate. Prepared for the 2010 SDC-CIC Joint Steering Committee Meetings February 24, 2010 Edward C. Castro Jr. U.S. CENSUS BUREAU U.S. DEPARTMENT OF COMMERCE Washington, DC 20233. Outline. Weighting
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Calculating The Estimates And Weights For The Vacancy Rate Prepared for the 2010 SDC-CIC Joint Steering Committee Meetings February 24, 2010 Edward C. Castro Jr. U.S. CENSUS BUREAU U.S. DEPARTMENT OF COMMERCE Washington, DC 20233
Outline • Weighting • Distribution of Vacant and Occupied Housing Units • Vacancy Rate • Summary
Weighting • Weights account for sampling the population. • Initial weight accounts for probability of selection. Non-respondents for mail and telephone are sampled for follow-up. • Non-interview adjustments controlled by geography, sample month, and type of home. • Controls are applied to housing unit and population totals to correct coverage error.
Vacancy Rate (cont.) • Vacancy Rate = 8,240 / 51,500 = 16%
Summary • Vacancy rate is determined by sampling rate and non-response adjustment. • There are adjustments for the non-interviews and housing unit controls but they do not impact the vacancy rate.
Thank You • If you have any questions or comments: • Edward.C.Castro@census.gov • For more information on the ACS please visit: • http://www.census.gov/acs/www