Data Dictionary: Census 2010
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Survey: Census 2010
Data Source: Census Bureau; Social Explorer
Table: PCT12I. Sex By Age (White Alone, Not Hispanic Or Latino) [209]
Universe: People who are White alone, not Hispanic or Latino
Table Details
PCT12I. Sex By Age (White Alone, Not Hispanic Or Latino)
Universe: People who are White alone, not Hispanic or Latino
Variable Label
PCT012I001
PCT012I002
PCT012I003
PCT012I004
PCT012I005
PCT012I006
PCT012I007
PCT012I008
PCT012I009
PCT012I010
PCT012I011
PCT012I012
PCT012I013
PCT012I014
PCT012I015
PCT012I016
PCT012I017
PCT012I018
PCT012I019
PCT012I020
PCT012I021
PCT012I022
PCT012I023
PCT012I024
PCT012I025
PCT012I026
PCT012I027
PCT012I028
PCT012I029
PCT012I030
PCT012I031
PCT012I032
PCT012I033
PCT012I034
PCT012I035
PCT012I036
PCT012I037
PCT012I038
PCT012I039
PCT012I040
PCT012I041
PCT012I042
PCT012I043
PCT012I044
PCT012I045
PCT012I046
PCT012I047
PCT012I048
PCT012I049
PCT012I050
PCT012I051
PCT012I052
PCT012I053
PCT012I054
PCT012I055
PCT012I056
PCT012I057
PCT012I058
PCT012I059
PCT012I060
PCT012I061
PCT012I062
PCT012I063
PCT012I064
PCT012I065
PCT012I066
PCT012I067
PCT012I068
PCT012I069
PCT012I070
PCT012I071
PCT012I072
PCT012I073
PCT012I074
PCT012I075
PCT012I076
PCT012I077
PCT012I078
PCT012I079
PCT012I080
PCT012I081
PCT012I082
PCT012I083
PCT012I084
PCT012I085
PCT012I086
PCT012I087
PCT012I088
PCT012I089
PCT012I090
PCT012I091
PCT012I092
PCT012I093
PCT012I094
PCT012I095
PCT012I096
PCT012I097
PCT012I098
PCT012I099
PCT012I100
PCT012I101
PCT012I102
PCT012I103
PCT012I104
PCT012I105
PCT012I106
PCT012I107
PCT012I108
PCT012I109
PCT012I110
PCT012I111
PCT012I112
PCT012I113
PCT012I114
PCT012I115
PCT012I116
PCT012I117
PCT012I118
PCT012I119
PCT012I120
PCT012I121
PCT012I122
PCT012I123
PCT012I124
PCT012I125
PCT012I126
PCT012I127
PCT012I128
PCT012I129
PCT012I130
PCT012I131
PCT012I132
PCT012I133
PCT012I134
PCT012I135
PCT012I136
PCT012I137
PCT012I138
PCT012I139
PCT012I140
PCT012I141
PCT012I142
PCT012I143
PCT012I144
PCT012I145
PCT012I146
PCT012I147
PCT012I148
PCT012I149
PCT012I150
PCT012I151
PCT012I152
PCT012I153
PCT012I154
PCT012I155
PCT012I156
PCT012I157
PCT012I158
PCT012I159
PCT012I160
PCT012I161
PCT012I162
PCT012I163
PCT012I164
PCT012I165
PCT012I166
PCT012I167
PCT012I168
PCT012I169
PCT012I170
PCT012I171
PCT012I172
PCT012I173
PCT012I174
PCT012I175
PCT012I176
PCT012I177
PCT012I178
PCT012I179
PCT012I180
PCT012I181
PCT012I182
PCT012I183
PCT012I184
PCT012I185
PCT012I186
PCT012I187
PCT012I188
PCT012I189
PCT012I190
PCT012I191
PCT012I192
PCT012I193
PCT012I194
PCT012I195
PCT012I196
PCT012I197
PCT012I198
PCT012I199
PCT012I200
PCT012I201
PCT012I202
PCT012I203
PCT012I204
PCT012I205
PCT012I206
PCT012I207
PCT012I208
PCT012I209
Notes:
Source: 2000 SF1 PCT12I.
Relevant Documentation:
Excerpt from: Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
 
Sex
Individuals were asked to mark either "male&quot or "female" to indicate their sex. For most cases in which sex was not reported, the appropriate entry was determined from the persons given (i.e., first) name and household relationship. Otherwise, sex was allocated according to the relationship to the householder and the age of the person. (For more information on allocation, see "2010 Census: Operational Overview and Accuracy of the Data.")


Sex Ratio
The sex ratio represents the balance between the male and female populations. Ratios above 100 indicate a larger male population, and ratios below 100 indicate a larger female population. This measure is derived by dividing the total number of males by the total number of females and then multiplying by 100. It is rounded to the nearest tenth.

Comparability
A question on the sex of individuals has been asked of the total population in every census.

Excerpt from: Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
 
Age
The data on age were derived from answers to a two-part question (i.e., age and date of birth). The age classification for a person in census tabulations is the age of the person in completed years as of April 1, 2010, the census reference date. Both age and date of birth responses are used in combination to
determine the most accurate age for the person as of the census reference date. Inconsistently reported and missing values are assigned or allocated based on the values of other variables for that person, from other people in the household or from people in other households (i.e., hot-deck imputation).
Age data are tabulated in age groupings and single years of age. Data on age also are used to classify other characteristics in census tabulations.


Median Age
This measure divides the age distribution into two equal parts: one-half of the cases falling below the median value and one-half above the value. Median age is computed on the basis of a single-year-of-age distribution using a linear interpolation method.

Limitation of the data
There is some tendency for respondents to provide their age as of the date they completed the census questionnaire or interview, not their age as of the census reference date. The two-part question and editing procedures have attempted to minimize the effect of this reporting problem on tabulations. Additionally, the current census age question displays the census reference date prominently, and interviewer training emphasizes the importance of collecting age as of the reference date.

Respondents sometimes round a persons age up if they were close to having a birthday. For most single years of age, the misstatements are largely offsetting. The problem is most pronounced at age 0. Also, there may have been more rounding up to age 1 to avoid reporting age as 0 years. (Age in completed months was not collected for infants under age 1.) Editing procedures correct this problem.

There is some respondent resistance to reporting the ages of babies in completed years (i.e., 0 years old when the baby is under 1 year old). Instead, babies ages are sometimes reported in months. The two-part question along with enhanced editing and data capture procedures correct much of this problem before the age data are finalized in tabulations. Additionally, the current census age question includes an instruction for babies ages to be answered as 0 years old when they are under 1 year old.

Age heaping is a common age misreporting error. Age heaping is the tendency for people to overreport ages (or years of birth) that end in certain digits (commonly digits 0 or 5) and underreport ages or years of birth ending in other digits. The two-part question helps minimize the effect of age heaping on the final tabulations.

Age data for centenarians have a history of data quality challenges. The counts in the 1970 and 1980 Censuses for people 100 years and over were substantially overstated. Editing and data collection methods have been enhanced in order to meet the data quality challenges for this population.

It also has been documented that the population aged 69 in the 1970 Census and the population aged 79 in the 1980 Census were overstated. The population aged 89 in 1990 and the population aged 99 in 2000 did not have an overstated count. (For more information on the design of the age question, see the Comparability section below.)

Comparability
Age data have been collected in every census. However, there have been some differences in the way they have been collected and processed over time. In the 2010 Census (as in Census 2000), each individual provided both an age and an exact date of birth. The 1990 Census collected age and year of birth. Prior censuses had collected month and quarter of birth in addition to age and year of birth. The 1990 Census change was made so that coded information could be obtained for both age and year 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 2010 Census: Operational Overview and Accuracy of the Data.)

Excerpt from: Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
 
White
A person having origins in any of the original peoples of Europe, the Middle East, or North Africa. It includes people who indicate their race as White or report entries such as Irish, German, Italian, Lebanese, Arab, Moroccan, or Caucasian.

Excerpt from: Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
 
Hispanic or Latino Origin
The data on the Hispanic or Latino population were derived from answers to a question that was asked of all people. The terms Hispanic,Latino, and Spanish are used interchangeably. Some respondents identify with all three terms, while others may identify with only one of these three specific terms. People who identify with the terms Hispanic,Latino, or Spanish are those who classify themselves in one of the specific Hispanic, Latino, or Spanish categories listed on the questionnaire (Mexican,Puerto Rican, or Cuban) as well as those who indicate that they are another Hispanic, Latino, or Spanish origin. People who do not identify with one of the specific origins listed on the questionnaire but indicate that they are another Hispanic, Latino, or Spanish origin are those whose origins are from Spain, the Spanish-speaking countries of Central or South America, or the Dominican Republic. Up to two write-in responses to the another Hispanic, Latino, or Spanish origin category are coded.

Origin can be viewed as the heritage, nationality group, lineage, or country of birth of the person or the persons parents or ancestors before their arrival in the United States. People who identify their origin as Hispanic, Latino, or Spanish may be any race.

Some tabulations are shown by the origin of the householder. In all cases where the origin of households, families, or occupied housing units is classified as Hispanic, Latino, or Spanish, the origin of the householder is used. (See the discussion of householder under "Household Type and Relationship.")

If an individual did not provide a Hispanic origin response, his or her origin was allocated using specific rules of precedence of household relationship. For example, if origin was missing for a natural-born child in the household, then either the origin of the householder, another natural-born child, or spouse of the householder was allocated.
If Hispanic origin was not reported for anyone in the household and origin could not be obtained from a response to the race question, then their origin was assigned based on their prior census record (either from Census 2000 or the American Community Survey), if available. If not, then the Hispanic origin of a householder in a previously processed household with the same race was allocated. (For more information on allocation, see "2010 Census: Operational Overview and Accuracy of the Data.") As in Census 2000, surnames (Spanish and non-Spanish) were used to assist in allocating an origin or race.

Comparability
There are four changes to the Hispanic origin question for the 2010 Census. First, the wording of the question differs from that in 2000. In 2000, the question asked if the person was Spanish/Hispanic/Latino. In 2010, the question asks if the person is of Hispanic, Latino, or Spanish origin. Second, in 2000, the question provided an instruction, Mark ý the 'No'box if not Spanish/Hispanic/Latino. The 2010 Census question provided no specific instruction for non-Hispanics. Third, in 2010, the Yes, another Hispanic, Latino, or Spanish origin category provided examples of six Hispanic origin groups (Argentinean, Colombian, Dominican, Nicaraguan, Salvadoran, Spaniard, and so on) and instructed respondents to print origin. In 2000, no Hispanic origin examples were given. Finally, the fourth change was the addition of a new instruction in the 2010 Census that was not used in Census 2000. The instruction is stated as follows: NOTE: Please answer BOTH Question 8 about Hispanic origin and Question 9 about race. For this census, Hispanic origins are not races.

There were two changes to the Hispanic origin question for Census 2000. First, the sequence of the race and Hispanic origin questions for Census 2000 differs from that in 1990; in 1990, the race question preceded the Hispanic origin question. Testing prior to Census 2000 indicated that response to the Hispanic origin question could be improved by placing it before the race question without affecting the response to the race question. Second, there was an instruction preceding the Hispanic origin question indicating that respondents should answer both the Hispanic origin and the race questions. This instruction was added to give emphasis to the distinct concepts of the Hispanic origin and race questions, and emphasized the need for both pieces of information.

Furthermore, there was a change in the processing of the Hispanic origin and race responses. In the 1990 census, respondents provided Hispanic origin responses in the race question and race responses in the Hispanic origin question. In 1990, the Hispanic origin question and the race question had separate edits; therefore, although information may have been present on the questionnaire, it was not fully utilized due to the discrete nature of the edits. However, for Census 2000, there was a joint race and Hispanic origin edit that utilized Hispanic origin and race information regardless of the location.