Table B-9. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation for State of Origin: 2002 and 1997
Monday, July 2, 2012
Table B-9. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation for State of Origin: 2002 and 1997
[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]
| Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
| All modes | 4.0 | 3.4 | 6.1 | 9.6 | 8.5 | 15.2 | 5.8 | 4.6 | 9.3 | 8.4 | 4.7 | 11.0 |
| Single modes | 4.8 | 4.5 | 7.7 | 9.9 | 8.7 | 15.8 | 4.9 | 3.1 | 8.0 | 23.5 | 10.5 | 37.3 |
| Truck | 4.9 | 4.3 | 7.6 | 12.4 | 9.2 | 18.8 | 6.7 | 3.8 | 10.8 | 22.6 | 13.5 | 26.7 |
| Rail | 23.6 | 8.4 | 34.5 | 23.1 | 12.5 | 40.0 | 14.0 | 10.6 | 25.2 | 8.7 | 5.8 | 10.6 |
| Water | 43.0 | S | S | 39.2 | S | S | S | S | S | 13.2 | 14.5 | 26.9 |
| Air (including truck and air) | 15.0 | 11.2 | 20.9 | 41.4 | 15.5 | 25.6 | 23.2 | 18.4 | 14.1 | 5.7 | 2.4 | 8.9 |
| Pipeline | 18.8 | 13.9 | 33.2 | 18.4 | 12.1 | 26.2 | S | S | S | S | S | S |
| Multiple modes | 7.6 | 3.3 | 10.9 | 18.5 | 5.2 | 37.1 | 24.6 | 10.5 | 48.1 | 5.6 | 3.3 | 6.3 |
| Parcel, USPS or courier | 7.5 | 3.9 | 11.4 | 9.8 | 5.3 | 12.5 | 13.5 | 8.1 | 16.7 | 5.6 | 3.4 | 6.3 |
| Truck and rail | 21.2 | 41.9 | 34.6 | 28.5 | 15.6 | 67.4 | 31.5 | 21.4 | 52.4 | 6.5 | 4.4 | 6.7 |
| Other Multiple modes | 34.3 | 14.1 | 48.2 | 48.9 | 16.9 | 200.8 | 47.9 | 20.0 | 186.3 | 1.9 | 4.1 | 4.8 |
| Other and unknown modes | 11.2 | 10.2 | 11.0 | 29.8 | 17.7 | 22.3 | 12.8 | 27.2 | 7.9 | 18.0 | 23.9 | 25.5 |
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.
CV Coefficient of variation of number
NOTE: The Introduction and appendixes give information onf 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, Individual State Data, December 2004.