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Table B-3a. Estimated Measures of Reliability for Export Shipment Characteristics by Country of Destination: 2012

Monday, July 13, 2015

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(Estimates are based on data from the 2012 Commodity Flow Survey)

Country of destination Value Tons
Coefficient of variation of number Standard error of percent Coefficient of variation of number Standard error of percent
Total 2.0 0.0 10.4 0.0
Canada 4.7 1.0 6.4 1.3
Mexico 5.6 0.5 11.2 1.7
All other countries 2.7 1.0 13.9 2.2

NOTES: Value-of-shipments estimates have not been adjusted for price changes. Appendix B tables provide estimated measures of sampling variability. The Introduction and appendixes give information on confidentiality protection, sampling error, nonsampling error, sample design and definitions. Links to this information on the Internet may be found at <>.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2012 Economic Census: Transportation Commodity Flow Survey, December 2014.