Data Dictionary - ACS 2009 (1-Year Estimates) - American Community Survey 2009

Data Dictionary:

ACS 2009 (1-Year Estimates)

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Survey: ACS 2009 (1-Year Estimates)

Data Source:

U.S. Census Bureau

Data set: American Community Survey 2009 (ACS09)

Table:

B99191. Imputation of Individuals' Income in the Past 12 Months for the Population 15 Years and Over - Percent of Income Imputed [8]

Universe: Population 15 years and Over

Table Details

B99191.

Imputation of Individuals' Income in the Past 12 Months for the Population 15 Years and Over - Percent of Income Imputed

Universe: Population 15 years and Over

Variable	Label
B99191001	Total
B99191002	No Income Imputed
B99191003	Dollar Value of Zero Imputed
B99191004	More than 0 to Less than 10 Percent of Total Income for Individual Imputed
B99191005	10 to Less than 25 Percent of Total Income for Individual Imputed
B99191006	25 to Less than 50 Percent of Total Income for Individual Imputed
B99191007	50 to Less than 100 Percent of Total Income for Individual Imputed
B99191008	100 Percent of Total Income for Individual Imputed

Relevant Documentation:

Excerpt from:	Social Explorer; U.S. Census Bureau; American Community Survey 2009 Summary File: Technical Documentation.
	ACS 2009-1yr Summary File: Technical Documentation -> Appendix A. Supplemental Documentation -> 2009 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.

Excerpt from:	Social Explorer; U.S. Census Bureau; American Community Survey 2009 Summary File: Technical Documentation.
	ACS 2009-1yr Summary File: Technical Documentation -> Appendix A. Supplemental Documentation -> 2009 Subject Definitions -> Population Variables -> Cash Public Assistance -> Income of Individuals

Income of Individuals

Income for individuals is obtained by summing the eight types of income for each person 15 years old and over. The characteristics of individuals are based on the time of interview even though the amounts are for the past 12 months.

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