Table B-16a. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics for Export by Country of Destination: 2012
Monday, July 13, 2015
(Estimates are based on data from the 2012 Commodity Flow Survey)
| Country of destination | Value | Tons | Ton-miles (1) | |||
|---|---|---|---|---|---|---|
| Coefficient of variation of number | Standard error of percent of total | Coefficient of variation of number | Standard error of percent of total | Coefficient of variation of number | Standard error of percent of total | |
| Total | 20.4 | 0.0 | 25.5 | 0.0 | 19.2 | 0.0 |
| Canada | 15.3 | 2.1 | 19.6 | 4.0 | 16.9 | 3.9 |
| Mexico | 19.7 | 5.3 | 25.1 | 7.6 | 41.9 | 7.1 |
| All other countries | 26.5 | 5.7 | 35.8 | 8.1 | 11.5 | 4.4 |
(1) Ton-miles estimates are based on estimated distances traveled along a modeled transportation network. See “Mileage Calculations” section for additional information.
NOTES: 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 <www.census.gov/econ/cfs>.
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.