This section contains information concerning how the U.S. Census Bureau collected the 2007 data and how the published data were generated. Select the appropriate topic below for information on the sampling frame, collection periods, collection methods, editing, imputation, sampling error, response rates and nonsampling error.
Population of Interest - Description of sampling frame
Data Collection - Collection period and methods
Data Processing - Editing, imputation, and sampling error
Data Quality - Response rates and nonsampling errors