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Table B–2d. Estimated Standard Errors for Shipment Characteristics by Total Modal Activity for the United States: Annualized Growth Rate for 1997 to 2002 and 1993 to 2002
[Estimates are shown as percents and are based on data from the 2002, 1997, and 1993 Commodity Flow Surveys]
Excel | CSV
| Total |
0.9 |
0.5 |
0.8 |
0.5 |
| Truck |
0.7 |
0.3 |
0.9 |
0.4 |
| Rail |
1.9 |
0.9 |
1.3 |
0.9 |
| Shallow draft |
2.3 |
1.6 |
5.5 |
1.4 |
| Great Lakes |
4.8 |
2.7 |
3.8 |
3.0 |
| Deep draft |
5.0 |
2.7 |
3.5 |
1.5 |
| Air |
3.5 |
1.5 |
1.0 |
0.5 |
| Parcel, U.S.P.S. or
courier |
1.2 |
0.5 |
0.7 |
0.4 |
| Pipeline |
S |
S |
S |
S |
| Other and unknown modes |
2.3 |
2.6 |
3.3 |
3.0 |
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.
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