25 to Less than 50 Percent of Total Income for Household Imputed - B99194006 - Imputation of Nonfamily Household Income in the Past 12 Months -- Percent of Income Imputed - American Community Survey Tables: 2008 -- 2012 (5-Year Estimates) (ACS12_5yr) - Survey ACS 2012 (5-Year Estimates)

Data Dictionary:

ACS 2012 (5-Year Estimates)

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Survey: ACS 2012 (5-Year Estimates)

Data Source:

U.S. Census Bureau

Data set: American Community Survey Tables: 2008 -- 2012 (5-Year Estimates) (ACS12_5yr)

Table:

B99194. Imputation of Nonfamily Household Income in the Past 12 Months -- Percent of Income Imputed [8]

Universe: Universe: Nonfamily households

Variable Details

B99194.	Imputation of Nonfamily Household Income in the Past 12 Months -- Percent of Income Imputed
	Universe: Universe: Nonfamily households
	B99194001Universe: Nonfamily households B99194006 25 to Less than 50 Percent of Total Income for Household Imputed Percent base: Nonfamily Households (ACS12_5yr:B99194001) Aggregation method: Addition

Relevant Documentation:

Excerpt from:	Social Explorer; U.S. Census Bureau; American Community Survey 2008-2012 Summary File: Technical Documentation.
	ACS 2012-5yr Summary File: Technical Documentation -> Appendix A: Supplemental Documentation -> 2008-2012 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.