Table B-4a. Estimated Measures of Reliability for Export Shipment Characteristics by Export Mode and Country of Destination: 2002
Monday, July 2, 2012
Table B-4a. Estimated Measures of Reliability for Export Shipment Characteristics by Export Mode and Country of Destination: 2002
[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]
Total
| Export mode of transportation | Value | Tons | ||
|---|---|---|---|---|
| CV 02 | Std. error of percent | CV 02 | Std. error of percent | |
| All modes | 4.9 | – | 11.8 | – |
Canada
| Export mode of transportation | Value | Tons | ||
|---|---|---|---|---|
| CV 02 | Std. error of percent | CV 02 | Std. error of percent | |
| All modes | 4.5 | – | 9.5 | – |
| Single modes | 4.7 | 1.1 | 9.0 | 1.9 |
| Truck | 5.9 | 2.0 | 5.7 | 3.0 |
| Rail | 13.7 | 1.1 | 18.8 | 4.1 |
| Water | 12.6 | 0.2 | 18.4 | 3.5 |
| Air (including truck and air) | 13.2 | 1.0 | 25.3 | – |
| Pipeline | S | S | S | S |
| Multiple modes | 10.9 | 1.1 | 31.3 | 1.9 |
| Parcel, U.S.P.S. or courier | 22.4 | 1.0 | 17.2 | – |
| Truck and rail | – | – | – | – |
| All other multiple modes | 11.1 | 0.8 | 31.7 | 1.9 |
| Other and unknown modes | 21.7 | 0.6 | 36.4 | 1.0 |
Mexico
| Export mode of transportation | Value | Tons | ||
|---|---|---|---|---|
| CV 02 | Std. error of percent | CV 02 | Std. error of percent | |
| All modes | 18.0 | – | 16.0 | – |
| Single modes | 7.1 | 7.5 | 16.5 | 1.2 |
| Truck | 9.8 | 7.0 | 13.0 | 5.2 |
| Rail | 12.0 | 0.9 | 26.1 | 4.8 |
| Water | 27.4 | 2.4 | 28.8 | 7.4 |
| Air (including truck and air) | 23.4 | 1.3 | 28.5 | – |
| Pipeline | S | S | S | S |
| Multiple modes | S | S | 20.4 | 1.0 |
| Parcel, U.S.P.S. or courier | 22.1 | 0.5 | S | S |
| Truck and rail | – | – | – | – |
| All other multiple modes | S | S | 20.8 | 1.0 |
| Other and unknown modes | 22.6 | 0.8 | 9.2 | 0.3 |
All Others
| Export mode of transportation | Value | Tons | ||
|---|---|---|---|---|
| CV 02 | Std. error of percent | CV 02 | Std. error of percent | |
| All modes | 4.9 | – | 15.0 | – |
| Single modes | 5.3 | 0.8 | 15.6 | 1.1 |
| Truck | 42.1 | 1.9 | 10.4 | 0.1 |
| Rail | 21.8 | – | 43.7 | 1.1 |
| Water | 5.8 | 1.4 | 16.4 | 1.9 |
| Air (including truck and air) | 7.5 | 2.1 | 11.5 | 0.3 |
| Pipeline | S | S | S | S |
| Multiple modes | 6.1 | 0.7 | 24.7 | 1.2 |
| Parcel, U.S.P.S. or courier | 10.3 | 0.6 | 46.9 | – |
| Truck and rail | – | – | – | – |
| All other multiple modes | 8.8 | 0.4 | 25.6 | 1.2 |
| Other and unknown modes | 16.1 | 0.4 | 36.5 | 0.6 |
KEY:
– Represents an estimate equal to zero or less than 1 unit of
measure.
S Estimate does not meet publication standards because of high 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: Research and Innovative Technologies Administration, Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Export Data, March 2005.