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The American Community Survey (ACS) is an annual demographics survey program conducted by the United States Census Bureau.It regularly gathers information previously contained only in the long form of the decennial census, including ancestry, US citizenship status, educational attainment, income, language proficiency, migration, disability, employment, and housing characteristics.
The ACS study correlated air pollution data, lifestyle factors, and death records for a sample of 552,138 adults in 151 urban areas followed over a 16-year period and concluded, just as the original had done, that breathing particulate pollution increases a person's risk of death: "Particulate air pollution was associated with cardiopulmonary ...
Data collection or data gathering is the process of gathering and measuring information on targeted variables in an established system, which then enables one to answer relevant questions and evaluate outcomes. Data collection is a research component in all study fields, including physical and social sciences, humanities, [2] and business ...
DOT agencies provided funding for technical support related to use of the data as well as coordination and software. From 1970 to 2000 the CTPP used data from the decennial census long form. The long-form decennial census was discontinued after the 2000 decennial census and in 2006 much of the content of the long form was replaced with the ACS. [5]
When applied to translated surveys, the expert panel also includes translators and they usually produce individual reports and then convene a resolution meeting that generates an improved version of the survey translation. [6] Compared to empirical pretesting methods, an expert review is more time-efficient and less costly to complete. [7]
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Survey methodology is "the study of survey methods". [1] As a field of applied statistics concentrating on human-research surveys, survey methodology studies the sampling of individual units from a population and associated techniques of survey data collection, such as questionnaire construction and methods for improving the number and accuracy of responses to surveys.
A research design typically outlines the theories and models underlying a project; the research question(s) of a project; a strategy for gathering data and information; and a strategy for producing answers from the data. [1] A strong research design yields valid answers to research questions while weak designs yield unreliable, imprecise or ...