Table B-16a. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics for Export by Country of Destination: 2002
Monday, July 2, 2012
Table B-16a. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics for Export by Country of Destination: 2002
[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]
| Country | Value | Tons | ||
|---|---|---|---|---|
| CV | Std. error of percent | CV | Std. error of percent | |
| Total | 16.2 | 24.9 | ||
| Canada | 19.9 | 4.7 | 26.1 | 7.4 |
| Mexico | 28.5 | 3.3 | 29.9 | 7.5 |
| All Others | 20.3 | 5.4 | 39.0 | 9.8 |
KEY:
– Represents an estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of highly sampling
variability or poor response quality.
CV Coefficient of variation of number
NOTE: 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/cfs.
SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.