|Data Dictionary:||ACS 2006 (1-Year Estimates)|
|Data Source:||U.S. Census Bureau|
Universe: Universe: Workers 16 years and over
|ACS 2006-1yr Summary File: Technical Documentation -> Chapter 6. Accuracy of the Data -> 6.11. Control of Nonsampling Error -> 6.11.8. Content Editing|
After data collection was completed, any remaining incomplete or inconsistent information was imputed during the final content edit of the collected data. Imputations, or computer assignments of acceptable codes in place of unacceptable entries or blanks, were needed most often when an entry for a given item was missing or when the information reported for a person or housing unit on that item was inconsistent with other information for that same person or housing unit. As in other surveys and previous censuses, the general procedure for changing unacceptable entries was to allocate an entry for a person or housing unit that was consistent with entries for persons or housing units with similar characteristics. Imputing acceptable values in place of blanks or unacceptable entries enhances the usefulness of the data.
|ACS 2006-1yr Summary File: Technical Documentation -> Appendix B. Subject Definitions -> Population Variables -> Journey to Work -> Time Leaving Home to Go to Work|
The data on time leaving home to go to work were derived from answers to Question 27. This question was asked of people who indicated in Question 23 that they worked at some time during the reference week, and who reported in Question 25 that they worked outside their home. The departure time refers to the time of day that the respondent usually left home to go to work during the reference week. (See "Reference Week.")
Limitation of the Data
Beginning in 2006, the group quarters (GQ) population is included in the ACS. Some types of GQ populations may have departure time distributions that are different from the household population. The inclusion of the GQ population could therefore have a noticeable impact on the departure time distribution. This is particularly true for areas with a substantial GQ population.
Beginning in 1999, the American Community Survey questions differ from the 1996-1998 questions only in the format of the skip instructions.