25 to Less than 50 Percent of Total Income for Individual Imputed - B99171013 - Imputation of Poverty Status in the Past 12 Months for Unrelated Individuals - American Community Survey 2012 (3-Year Estimates) (ACS2012_3yr) - Survey ACS 2012 (3-Year Estimates)

Data Dictionary:

ACS 2012 (3-Year Estimates)

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Survey: ACS 2012 (3-Year Estimates)

Data Source:

U.S. Census Bureau

Data set: American Community Survey 2012 (3-Year Estimates) (ACS2012_3yr)

Table:

B99171. Imputation of Poverty Status in the Past 12 Months for Unrelated Individuals [15]

Universe: Universe: Unrelated individuals 15 years and Over for whom poverty status Is determined

Variable Details

B99171.	Imputation of Poverty Status in the Past 12 Months for Unrelated Individuals
	Universe: Universe: Unrelated individuals 15 years and Over for whom poverty status Is determined
	B99171001Universe: Unrelated individuals 15 years and Over for whom poverty status Is determined B99171013 25 to Less than 50 Percent of Total Income for Individual Imputed Percent base: Unrelated Individuals 15 Years and Over for Whom Poverty Status Is Determined (ACS2012_3yr:B99171001) Aggregation method: Addition

Relevant Documentation:

Excerpt from:	Social Explorer; U.S. Census Bureau; American Community Survey 2012 3yr Summary File: Technical Documentation.
	ACS 2012-3yr Summary File: Technical Documentation -> Appendix A: Supplemental Documentation -> 2010-2012 Subject Definitions -> Quality Measures -> Imputation Rates

Imputation Rates

Missing data for a particular question or item is called item nonresponse. It occurs when a respondent fails to provide an answer to a required item. The ACS also considers invalid answers as item nonresponse. The Census Bureau uses imputation methods that either use rules to determine acceptable answers or use answers from similar housing units or people who provided the item information. One type of imputation, allocation, involves using statistical procedures, such as within-household or nearest neighbor matrices populated by donors, to impute for missing values.

Overall Person Characteristic Imputation Rate - This rate is calculated by adding together the weighted number of allocated items across a set of person characteristics, and dividing by the total weighted number of responses across the same set of characteristics.

Overall Housing Characteristic Imputation Rate - This rate is calculated by adding together the weighted number of allocated items across a set of household and housing unit characteristics, and dividing by the total weighted number of responses across the same set of characteristics.

These rates give an overall picture of the rate of item nonresponse for a geographic area.