Table B-4b. Estimated Measures of Reliability for Export Shipment Characteristics by Export Mode and Country of Destination: 2002 and 1997
Table B-4b. Estimated Measures of Reliability for Export Shipment Characteristics by Export Mode and Country of Destination: 2002 and 1997
[Estimates are shown as percents and are based on data from the 2002 and 1997 Commodity Flow Surveys]
Total
| Export mode of transportation | Value | Tons | ||||
|---|---|---|---|---|---|---|
| CV 02 | CV 97 | Std. error of percent change 1997-2002 | CV 02 | CV 97 | Std. error of percent change 1997-2002 | |
| All modes | 4.9 | 3.8 | 6.6 | 11.8 | 7.3 | 15.2 |
Canada
| Export mode of transportation | Value | Tons | ||||
|---|---|---|---|---|---|---|
| CV 02 | CV 97 | Std. error of percent change 1997-2002 | CV 02 | CV 97 | Std. error of percent change 1997-2002 | |
| All modes | 4.5 | 4.4 | 7.9 | 9.5 | 13.0 | 18.9 |
| Single modes | 4.7 | 5.5 | 9.2 | 9.0 | 13.4 | 18.1 |
| Truck | 5.9 | 3.7 | 9.7 | 5.7 | 9.5 | 13.0 |
| Rail | 13.7 | 26.4 | 25.8 | 18.8 | 21.2 | 38.5 |
| Water | 12.6 | 17.5 | 20.0 | 18.4 | 19.0 | 23.1 |
| Air (including truck and air) | 13.2 | 13.0 | 18.0 | 25.3 | 26.9 | 22.1 |
| Pipeline | S | S | S | S | S | S |
| Multiple modes | 10.9 | 7.4 | 55.9 | 31.3 | 13.8 | S |
| Parcel, U.S.P.S. or courier | 22.4 | 7.4 | 42.6 | 17.2 | 13.8 | 14.6 |
| Truck and rail | – | – | – | – | – | – |
| All other multiple modes | 11.1 | – | – | 31.7 | – | – |
| Other and unknown modes | 21.7 | 9.9 | 6.9 | 36.4 | 10.5 | 19.6 |
Mexico
| Export mode of transportation | Value | Tons | ||||
|---|---|---|---|---|---|---|
| CV 02 | CV 97 | Std. error of percent change 1997-2002 | CV 02 | CV 97 | Std. error of percent change 1997-2002 | |
| All modes | 18.0 | 25.9 | 41.4 | 16.0 | 23.7 | 43.0 |
| Single modes | 7.1 | 30.0 | 32.3 | 16.5 | 24.8 | 44.7 |
| Truck | 9.8 | 40.2 | 43.3 | 13.0 | 29.2 | 37.6 |
| Rail | 12.0 | S | S | 26.1 | 48.2 | 56.6 |
| Water | 27.4 | S | S | 28.8 | S | S |
| Air (including truck and air) | 23.4 | 13.9 | 40.4 | 28.5 | 14.3 | 29.0 |
| Pipeline | S | S | S | S | S | S |
| Multiple modes | S | 29.1 | S | 20.4 | 42.7 | S |
| Parcel, U.S.P.S. or courier | 22.1 | 29.1 | 77.3 | S | 42.7 | S |
| Truck and rail | – | – | – | – | – | – |
| All other multiple modes | S | – | S | 20.8 | – | – |
| Other and unknown modes | 22.6 | 44.8 | 17.0 | 9.2 | 25.5 | 11.2 |
All Others
| Export mode of transportation | Value | Tons | ||||
|---|---|---|---|---|---|---|
| CV 02 | CV 97 | Std. error of percent change 1997-2002 | CV 02 | CV 97 | Std. error of percent change 1997-2002 | |
| All modes | 4.9 | 4.3 | 6.4 | 15.0 | 7.7 | 17.3 |
| Single modes | 5.3 | 5.2 | 7.3 | 15.6 | 8.3 | 18.5 |
| Truck | 42.1 | 10.6 | 120.5 | 10.4 | 15.9 | 12.9 |
| Rail | 21.8 | 18.4 | 79.4 | 43.7 | 24.5 | 281.9 |
| Water | 5.8 | 6.5 | 8.6 | 16.4 | 8.5 | 19.2 |
| Air (including truck and air) | 7.5 | 9.3 | 10.9 | 11.5 | 8.8 | 12.2 |
| Pipeline | S | 32.6 | S | S | 35.9 | S |
| Multiple modes | 6.1 | 10.0 | 37.8 | 24.7 | 40.7 | S |
| Parcel, U.S.P.S. or courier | 10.3 | 10.0 | 20.7 | 46.9 | 40.7 | 41.6 |
| Truck and rail | – | – | – | – | – | – |
| All other multiple modes | 8.8 | – | – | 25.6 | – | – |
| Other and unknown modes | 16.1 | 8.6 | 5.3 | 36.5 | 29.5 | 11.4 |
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.