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How the Data are Collected

The How the Data are Collected (methodology) section contains information concerning how the Census Bureau uses statistics to generate the estimates provided by the Service Annual Survey (SAS) and the Quarterly Services Survey (QSS). This documentation ensures that we achieve consistent results and provide the most accurate data available about U.S. services economic activity.


Source: U.S. Census Bureau | Services | (888) 211-5946 |  Last Revised: February 13, 2013