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Data Dictionary: Census 1990
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Survey: Census 1990
Data Source: Social Explorer; U.S. Census Bureau
Table: T50. Average Nonfamily Household Income In 1989 Dollars [1]
Universe: Nonfamily households
Table Details
T50. Average Nonfamily Household Income In 1989 Dollars
Universe: Nonfamily households
Relevant Documentation:
Excerpt from: Social Explorer, U.S. Census Bureau; Census of Population and Housing, 1990: Summary Tape File 3 on CD-ROM [machine-readable data files] / prepared by the Bureau of the Census. Washington: The Bureau [producer and distributor], 1991.
  Summary Tape File 3 -> Appendix B. Definitions of Subject Characteristics -> Derived Measures -> Mean
Mean
This measure represents an arithmetic average of a set of values. It is derived by dividing the sum of a group of numerical items (or aggregate) by the total number of items. Aggregates are used in computing mean values. For example, mean family income is obtained by dividing the aggregate of all income reported by persons in families by the total number of families. (Additional information on means and aggregates is included in the separate explanations of many population and housing subjects.)

Excerpt from: Social Explorer, U.S. Census Bureau; Census of Population and Housing, 1990: Summary Tape File 3 on CD-ROM [machine-readable data files] / prepared by the Bureau of the Census. Washington: The Bureau [producer and distributor], 1991.
  Summary Tape File 3 -> Appendix B. Definitions of Subject Characteristics -> Population Characteristics -> Income in 1989 -> Income of Households
Income of Households
Includes the income of the householder and all other persons 15 years old and over in the household, whether related to the householder or not. Because many households consist of only one person, average household income is usually less than average family income.