Table B-11c. Estimated Standard Errors for Shipment Characteristics by Mode of Transportation for the United States: Annualized Growth Rate for 1997 to 2002 and 1993 to 2002
Monday, July 2, 2012
Table B-11c. Estimated Standard Errors for Shipment Characteristics by Mode of Transportation for the United States: Annualized Growth Rate for 1997 to 2002 and 1993 to 2002
[Estimates are based on data from the 2002, 1997, and 1993 Commodity Flow Surveys. Because of rounding, estimates may not be additive]
| Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||
|---|---|---|---|---|---|---|---|---|
| 1997 to 2002 | 1993 to 2002 | 1997 to 2002 | 1993 to 2002 | 1997 to 2002 | 1993 to 2002 | 1997 to 2002 | 1993 to 2002 | |
| Total | 0.3 | 0.1 | 0.5 | 0.3 | 0.9 | 0.4 | 0.8 | 0.4 |
| Single modes | 0.4 | 0.2 | 0.5 | 0.3 | 0.8 | 0.4 | 1.6 | 0.8 |
| Truck | 0.4 | 0.2 | 0.6 | 0.3 | 0.7 | 0.3 | 1.0 | 0.4 |
| Rail | 1.6 | 0.7 | 1.4 | 0.7 | 1.8 | 0.8 | 1.5 | 0.7 |
| Water | 1.7 | 0.8 | 1.7 | 1.0 | 2.0 | 1.3 | 7.1 | S |
| Air (includes truck and air) | 2.8 | 1.0 | 2.5 | 1.7 | 3.4 | 1.6 | 1.0 | 0.5 |
| Pipeline | 2.0 | 1.0 | 2.2 | 1.1 | S | S | S | S |
| Multiple modes | 0.8 | 0.3 | 2.5 | 1.4 | 3.9 | 2.0 | 0.7 | 0.4 |
| Parcel, U.S.P.S. or courier | 0.8 | 0.3 | 1.1 | 0.5 | 1.2 | 0.5 | 0.7 | 0.4 |
| Truck and rail | 3.0 | 2.5 | 4.5 | 1.7 | 3.8 | 1.1 | 0.8 | 0.7 |
| Other multiple modes | 4.5 | 2.0 | 3.8 | 2.1 | 5.8 | 2.9 | 3.2 | 1.3 |
| Other and unknown modes | 0.9 | 0.6 | 2.9 | 2.1 | 2.3 | 2.6 | 3.3 | 2.8 |
KEY:
– Represents data cell 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.
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/cfs.
SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, United States Data, December 2004.