Census survey research methodoly definition
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A survey is a data collection activity involving a sample of the population. A census collects information about every member of the population. You might say a census is a 100 percent sample survey.
Surveys are less expensive to conduct than censuses because the survey doesn’t attempt to collect data from 100 percent of the people. Because of that, they might be taken more frequently and can provide information updates between censuses. Or, they can be used to collect more and different information than is collected in a census.
The most widely known census is the U.S. Census Bureau’s decennial census of population and housing, which aims to count all persons and housing units in the United States. For decades the decennial census had two parts:
1) the short form, which counted the population; and
2) the long form, which obtained demographic, housing, social, and economic information from a 1-in-6 sample of households. Information from the long form has been used for the administration of federal programs and the distribution of billions of federal dollars. The long form was always a sample survey, even though it was tabulated and reported as part of “the census.”
Since the census is done only once every 10 years, the information becomes out of date. There are annual population estimates but there have not been many intercensal estimates for the long-form concepts. Planners and other data users were reluctant to rely on the long-form data, especially toward the end of a decade, for decisions that are expensive and affect the quality of life of thousands of people. Thus was born the American Community Survey (ACS).
The ACS is a way to provide data more frequently than once every ten years. The survey is conducted continuously throughout the decade. The ACS replaced the decennial long form, beginning with the years prior to the 2010 census. Different people are surveyed at different times as the years go by, their answers are aggregated, and data are tabulated as three-year or five-year averages for most geographies.
Since the American Community Survey is not conducted or tabulated exactly the same way as the decennial long form survey, there will be differences between the two in the published tables. Data users need to be careful when comparing Census 2000 data with ACS data
hope it's helpful
Surveys are less expensive to conduct than censuses because the survey doesn’t attempt to collect data from 100 percent of the people. Because of that, they might be taken more frequently and can provide information updates between censuses. Or, they can be used to collect more and different information than is collected in a census.
The most widely known census is the U.S. Census Bureau’s decennial census of population and housing, which aims to count all persons and housing units in the United States. For decades the decennial census had two parts:
1) the short form, which counted the population; and
2) the long form, which obtained demographic, housing, social, and economic information from a 1-in-6 sample of households. Information from the long form has been used for the administration of federal programs and the distribution of billions of federal dollars. The long form was always a sample survey, even though it was tabulated and reported as part of “the census.”
Since the census is done only once every 10 years, the information becomes out of date. There are annual population estimates but there have not been many intercensal estimates for the long-form concepts. Planners and other data users were reluctant to rely on the long-form data, especially toward the end of a decade, for decisions that are expensive and affect the quality of life of thousands of people. Thus was born the American Community Survey (ACS).
The ACS is a way to provide data more frequently than once every ten years. The survey is conducted continuously throughout the decade. The ACS replaced the decennial long form, beginning with the years prior to the 2010 census. Different people are surveyed at different times as the years go by, their answers are aggregated, and data are tabulated as three-year or five-year averages for most geographies.
Since the American Community Survey is not conducted or tabulated exactly the same way as the decennial long form survey, there will be differences between the two in the published tables. Data users need to be careful when comparing Census 2000 data with ACS data
hope it's helpful
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