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Supporting Document B Census Bureau
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Examples of Location Source Hyperlink (Electronic) or Intermediate Page (Paper) Statement Hyperlink statements for confidentiality, sampling error, nonsampling error, and model error (for model-based estimates) for the examples below are provided in Attachment C. 1. Census 2000 Data For 100 percent Census 2000 data The data in [this table/these tables] are from Census 2000. To maintain confidentiality, the Census Bureau applies statistical procedures that introduce some uncertainty into data for geographic areas with small population groups. The results in [this table/these tables] contain nonsampling error. Data users who create their own estimates using data from American FactFinder tables should cite the Census Bureau as the source of the original data only. See also definitions of subject characteristics and geographic definitions. For the full technical documentation for the Census 2000 Summary File 1 (SF1), which is the source of data in this table, see http://www.census.gov/prod/cen2000/doc/sf1.pdf. For Census 2000 sample data The data in [this table/these tables] are from Census 2000. To maintain confidentiality, the Census Bureau applies statistical procedures that introduce some uncertainty into data for geographic areas with small population groups. The results in [this table/these tables] contain sampling and nonsampling error. Data users who create their own estimates using data from American FactFinder tables should cite the Census Bureau as the source of the original data only. See also definitions of subject characteristics and geographic definitions. For the full technical documentation for the Census 2000 Summary File 3 (SF3), which is the source of data in this table, see http://www.census.gov/prod/cen2000/doc/sf3.pdf. (Requires Adobe Acrobat Reader 6.0) 2. American Community Survey Data The data in [this table/these tables] are based on the American Community Survey conducted in 2000. To maintain confidentiality, the Census Bureau applies statistical procedures that introduce some uncertainty into data for geographic areas with small population groups. The data in [this table/these tables] contain sampling error and nonsampling error. Data users who create their own estimates using data from American FactFinder tables should cite the Census Bureau as the source of the original data only. See also definitions of subject characteristics and geographic definitions. For the full technical documentation, see http://www.census.gov/acs/www/UseData/index.htm. 3. Demographic Survey Data (Example - Survey of Income and Program Participation) The data in [this table/these tables] are based on the Survey of Income and Program Participation. The data in [this table/these tables] contain sampling error and nonsampling error. Data users who create their own estimates using data from Census Bureau tables should cite the Census Bureau as the source of the original data only. See also definitions of subject characteristics and geographic definitions. For the full technical documentation, see http://www.sipp.census.gov/sipp/methmain.htm 4. Economic Census Data The data in [this table/these tables] are based on the 2002 Economic Census. To maintain confidentiality, the Census Bureau suppresses data to protect the identity of any business or individual. The census results in [this table/these tables] contain nonsampling error. Data users who create their own estimates using data from American FactFinder tables should cite the Census Bureau as the source of the original data only. See also explanation of terms and geographic definitions. For the full technical documentation, see http://www.census.gov/econ/census02/pub_text/sector00/cmdesc.htm 5. Economic Survey Data (Example - Service Annual Survey) The data in [this table/these tables] are based on the 1998 Service Annual Survey. To maintain confidentiality, the Census Bureau suppresses data to protect the identity of any business or individual. The data in [this table/these tables] contain sampling error and nonsampling error. Data users who create their own estimates using data from American FactFinder tables should cite the Census Bureau as the source of the original data only. See also explanation of terms and geographic definitions. For the full technical documentation for the 1998 Service Annual Survey, see http://www.census.gov/svsd/www/cv.html. 6. Model-Based Estimates (Example - Small Area Income and Poverty Estimates/ SAIPE) The data in [this table/these tables] are indirect estimates produced by statistical model-based methods using sample survey, decennial census, and administrative data sources. To maintain confidentiality, the Census Bureau uses procedures to assure that the estimates and related information that are released cannot be used to disclose individual data or violate other confidentiality restrictions applicable to the source data. The estimates contain error stemming from model error, sampling error, and nonsampling error. Confidence intervals are provided to indicate the quality of the estimates. Subject to the validity of the underlying model assumptions, these reflect uncertainty due to the effects of model error and sampling error, but do not account for the effects of nonsampling error. In addition, one should exercise caution when making comparisons between these estimates for different years or different places, or between these model-based estimates and other Census Bureau estimates. The SAIPE website contains technical documentation for each set of estimates produced (see http://www.census.gov/hhes/www/saipe/documentation.html). Additional information is available in a final report prepared by the National Academy of Sciences that evaluates the methods used to produce the estimates. Document Management & Control
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