Data Dictionary: Census 2000
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Survey: Census 2000
Data Source: U.S. Census Bureau
Table: PCT72F. Age Of Householder By Household Income In 1999 Dollars (Some Other Race Alone Householder) [120]
Universe: Households with a householder who is Some other race alone
Table Details
PCT72F. Age Of Householder By Household Income In 1999 Dollars (Some Other Race Alone Householder)
Universe: Households with a householder who is Some other race alone
Variable Label
PCT072F001
PCT072F002
PCT072F003
PCT072F004
PCT072F005
PCT072F006
PCT072F007
PCT072F008
PCT072F009
PCT072F010
PCT072F011
PCT072F012
PCT072F013
PCT072F014
PCT072F015
PCT072F016
PCT072F017
PCT072F018
PCT072F019
PCT072F020
PCT072F021
PCT072F022
PCT072F023
PCT072F024
PCT072F025
PCT072F026
PCT072F027
PCT072F028
PCT072F029
PCT072F030
PCT072F031
PCT072F032
PCT072F033
PCT072F034
PCT072F035
PCT072F036
PCT072F037
PCT072F038
PCT072F039
PCT072F040
PCT072F041
PCT072F042
PCT072F043
PCT072F044
PCT072F045
PCT072F046
PCT072F047
PCT072F048
PCT072F049
PCT072F050
PCT072F051
PCT072F052
PCT072F053
PCT072F054
PCT072F055
PCT072F056
PCT072F057
PCT072F058
PCT072F059
PCT072F060
PCT072F061
PCT072F062
PCT072F063
PCT072F064
PCT072F065
PCT072F066
PCT072F067
PCT072F068
PCT072F069
PCT072F070
PCT072F071
PCT072F072
PCT072F073
PCT072F074
PCT072F075
PCT072F076
PCT072F077
PCT072F078
PCT072F079
PCT072F080
PCT072F081
PCT072F082
PCT072F083
PCT072F084
PCT072F085
PCT072F086
PCT072F087
PCT072F088
PCT072F089
PCT072F090
PCT072F091
PCT072F092
PCT072F093
PCT072F094
PCT072F095
PCT072F096
PCT072F097
PCT072F098
PCT072F099
PCT072F100
PCT072F101
PCT072F102
PCT072F103
PCT072F104
PCT072F105
PCT072F106
PCT072F107
PCT072F108
PCT072F109
PCT072F110
PCT072F111
PCT072F112
PCT072F113
PCT072F114
PCT072F115
PCT072F116
PCT072F117
PCT072F118
PCT072F119
PCT072F120
Relevant Documentation:
Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 3: Technical Documentation, 2002.
 
Age
The data on age, which was asked of all people, were derived from answers to the long-form questionnaire Item 4 and short-form questionnaire Item 6. The age classification is based on the age of the person in complete years as of April 1, 2000. The age of the person usually was derived from their date of birth information. Their reported age was used only when date of birth information was unavailable.

Data on age are used to determine the applicability of some of the sample questions for a person and to classify other characteristics in census tabulations. Age data are needed to interpret most social and economic characteristics used to plan and examine many programs and policies. Therefore, age is tabulated by single years of age and by many different groupings, such as 5-year age groups.

Median age
Median age divides the age distribution into two equal parts: one-half of the cases falling below the median age and one-half above the median. Median age is computed on the basis of a single year of age standard distribution (see the "Standard Distributions" section under "Derived Measures"). Median age is rounded to the nearest tenth. (For more information on medians, see "Derived Measures".)

Limitation of the data
The most general limitation for many decades has been the tendency of people to overreport ages or years of birth that end in zero or 5. This phenomenon is called "age heaping." In addition, the counts in the 1970 and 1980 censuses for people 100 years old and over were substantially overstated. So also were the counts of people 69 years old in 1970 and 79 years old in 1980. Improvements have been made since then in the questionnaire design and in the imputation procedures that have minimized these problems.

Review of detailed 1990 census information indicated that respondents tended to provide their age as of the date of completion of the questionnaire, not their age as of April 1, 1990. One reason this happened was that respondents were not specifically instructed to provide their age as of April 1, 1990. Another reason was that data collection efforts continued well past the census date. In addition, there may have been a tendency for respondents to round their age up if they were close to having a birthday. It is likely that approximately 10 percent of people in most age groups were actually 1 year younger. For most single years of age, the misstatements were largely offsetting. The problem is most pronounced at age zero because people lost to age 1 probably were not fully offset by the inclusion of babies born after April 1, 1990. Also, there may have been more rounding up to age 1 to avoid reporting age as zero years. (Age in complete months was not collected for infants under age 1.)

The reporting of age 1 year older than true age on April 1, 1990, is likely to have been greater in areas where the census data were collected later in calendar year 1990. The magnitude of this problem was much less in the 1960, 1970, and 1980 censuses where age was typically derived from respondent data on year of birth and quarter of birth.

These shortcomings were minimized in Census 2000 because age was usually calculated from exact date of birth and because respondents were specifically asked to provide their age as of April 1, 2000. (For more information on the design of the age question, see the section below that discusses "Comparability.")

Comparability
Age data have been collected in every census. For the first time since 1950, the 1990 data were not available by quarter year of age. This change was made so that coded information could be obtained for both age and year of birth. In 2000, each individual has both an age and an exact date of birth. In each census since 1940, the age of a person was assigned when it was not reported. In censuses before 1940, with the exception of 1880, people of unknown age were shown as a separate category. Since 1960, assignment of unknown age has been performed by a general procedure described as "imputation." The specific procedures for imputing age have been different in each census. (For more information on imputation, see "Accuracy of the Data.")

Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 3: Technical Documentation, 2002.
 
Householder
The data on relationship to householder were derived from the question, "How is this person related to Person 1," which was asked of Persons 2 and higher in housing units. One person in each household is designated as the householder (Person 1). In most cases, the householder is the person, or one of the people, in whose name the home is owned, being bought, or rented. If there is no such person in the household, any adult household member 15 years old and over could be designated as the householder (i.e., Person 1). Households are classified by type according to the sex of the householder and the presence of relatives. Two types of householders are distinguished: family householders and nonfamily householders. A family householder is a householder living with one or more individuals related to him or her by birth, marriage, or adoption. The householder and all of the people in the household related to him or her are family members. A nonfamily householder is a householder living alone or with nonrelatives only.

Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 3: Technical Documentation, 2002.
 
Income of households
This includes the income of the householder and all other individuals 15 years old and over in the household, whether they are related to the householder or not. Because many households consist of only one person, average household income is usually less than average family income. Although the household income statistics cover calendar year 1999, the characteristics of individuals and the composition of households refer to the time of enumeration (April 1, 2000). Thus, the income of the household does not include amounts received by individuals who were members of the household during all or part of calendar year 1999 if these individuals no longer resided in the household at the time of enumeration. Similarly, income amounts reported by individuals who did not reside in the household during 1999 but who were members of the household at the time of enumeration are included. However, the composition of most households was the same during 1999 as at the time of enumeration.

Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 3: Technical Documentation, 2002.
 
Some other race
This category includes all other responses not included in the "White," "Black or African American," "American Indian or Alaska Native," "Asian," and "Native Hawaiian" or "Other Pacific Islander" race categories described above. Respondents providing write-in entries such as multiracial, mixed, interracial, or a Hispanic/Latino group (for example, Mexican, Puerto Rican, or Cuban) in the "Some other race" write-in space are included in this category.