Table B-16b. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics for Export by Country of Destination: 2012 and 2007
Monday, July 13, 2015
(Estimates are based on data from the 2012 and 2007 Commodity Flow Surveys)
| Country of destination | Value | Tons | Ton-miles (1) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Coefficient of variation of number | Standard error of percent change | Coefficient of variation of number | Standard error of percent change | Coefficient of variation of number | Standard error of percent change | ||||
| 2012 | 2007 | 2012 | 2007 | 2012 | 2007 | ||||
| Total | 20.4 | 9.3 | 42.9 | 25.5 | 14.6 | 54.7 | 19.2 | X | X |
| Canada | 15.3 | 20.7 | 16.5 | 19.6 | 24.7 | 13.7 | 16.9 | X | X |
| Mexico | 19.7 | 29.6 | 79.7 | 25.1 | 30.5 | 114.3 | 41.9 | X | X |
| All other countries | 26.5 | 6.9 | 69.9 | 35.8 | 25.4 | 110.3 | 11.5 | X | X |
KEY: X = Not applicable.
(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.