Data Dictionary: | ACS 2007 (1-Year Estimates) |
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Survey: ACS 2007 (1-Year Estimates)
Data Source: | U.S. Census Bureau |
Table: | B08013. Aggregate Travel Time to Work (In Minutes) of Workers By Sex [3] |
Universe: Workers 16 years and Over who did not work at home
Table Details
B08013. | Aggregate Travel Time to Work (In Minutes) of Workers By Sex | ||||||||
Universe: Workers 16 years and Over who did not work at home | |||||||||
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Relevant Documentation:
Excerpt from: | Social Explorer; U.S. Census Bureau; American Community Survey 2007 Summary File: Technical Documentation. |
ACS 2007-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Journey to Work -> Aggregate Travel Time to Work (in Minutes) |
Aggregate travel time to work is calculated by adding all of the travel times (in minutes) for workers who did not work at home. Aggregate travel times of workers having specific characteristics also are computed. The aggregate travel time is subject to rounding, which means that all cells in a matrix are rounded to the nearest 5 minutes. (For more information, see "Aggregate" under "Derived Measures.")
Excerpt from: | Social Explorer; U.S. Census Bureau; American Community Survey 2007 Summary File: Technical Documentation. |
ACS 2007-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Employment Status -> Worker |
This term appears in connection with several subjects: employment status, journey-to-work questions, class of worker, weeks worked in the past 12 months, and number of workers in family in the past 12 months. Its meaning varies and, therefore, should be determined in each case by referring to the definition of the subject in which it appears. When used in the concepts "workers in family" and "full-time, year-round workers," the term "worker" relates to the meaning of work defined for the "work experience" subject.
Excerpt from: | Social Explorer; U.S. Census Bureau; American Community Survey 2007 Summary File: Technical Documentation. |
ACS 2007-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Sex |
The data on sex were derived from answers to Question 1. Individuals were asked to mark either "male" or "female" to indicate their sex. For most cases in which sex was not reported, the appropriate entry was determined from the person's given (i.e., first) name and household relationship. Otherwise, sex was imputed according to the relationship to the householder and the age of the person.
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.
Beginning in 2006, the population in group quarters (GQ) is included in the ACS. Some types of GQ populations have sex distributions that are very different from the household population. The inclusion of the GQ population could therefore have a noticeable impact on the sex distribution. This is particularly true for areas with a substantial GQ population.
The Census Bureau tested the changes introduced to the 2007 version of the sex question in the 2007 ACS Grid-Sequential Test (http://www.census.gov/acs/www/Downloads/ACS-MP-09_Grid-Sequential_Test_Final_Report.pdf). The results of this testing show that the changes may introduce an inconsistency in the data produced for this question as observed from the years 2006 to 2007
The Census Bureau tested the changes introduced to the 2007 version of the sex question in the 2007 ACS Grid-Sequential Test (http://www.census.gov/acs/www/Downloads/ACS-MP-09_Grid-Sequential_Test_Final_Report.pdf). The results of this testing show that the changes may introduce an inconsistency in the data produced for this question as observed from the years 2006 to 2007