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 | 3.9 | 4.8 | 7.2 | 6.5 | 6.2 | 11.3 | 17.8 | 10.9 | 23.8 | 11.8 | 17.0 | 21.7 |
| Single modes | 3.8 | 4.2 | 7.0 | 6.7 | 5.0 | 11.6 | 19.1 | 11.9 | 26.1 | 15.2 | 34.6 | 29.9 |
| Truck | 5.8 | 5.6 | 8.5 | 17.2 | 13.7 | 23.7 | S | 16.3 | S | 18.2 | 40.6 | 44.5 |
| Rail | 13.8 | 14.3 | 18.3 | 10.8 | 24.2 | 19.8 | 12.2 | 20.3 | 20.1 | 5.2 | 5.0 | 8.0 |
| Water | 10.1 | 10.6 | 30.9 | 15.4 | 13.4 | 45.4 | 10.3 | 23.0 | 31.0 | S | 18.6 | S |
| Air (including truck and air) | 45.5 | 35.2 | 16.5 | 25.8 | 35.7 | 27.4 | 23.4 | 31.5 | 34.3 | 6.6 | 3.3 | 8.6 |
| Pipeline | 17.7 | 10.6 | 26.9 | 16.8 | 12.7 | 25.2 | S | S | S | S | S | S |
| Multiple modes | 13.0 | 9.8 | 19.9 | 30.8 | 41.5 | 32.1 | 41.4 | 29.5 | 59.9 | 8.2 | 6.0 | 10.6 |
| Parcel, USPS or courier | 15.2 | 10.8 | 27.7 | 16.1 | 11.8 | 39.7 | 23.2 | 14.3 | 60.2 | 8.6 | 6.0 | 10.9 |
| Truck and rail | 37.7 | 23.1 | 27.8 | 44.6 | 27.5 | 31.4 | 35.2 | 20.8 | 21.0 | 18.4 | 6.5 | 16.9 |
| Other Multiple modes | 43.8 | S | S | 36.5 | 46.7 | 35.5 | 45.5 | 35.9 | 75.1 | 39.7 | 30.2 | 75.7 |
| Other and unknown modes | 41.9 | 31.1 | 22.1 | S | 36.7 | S | S | 29.0 | S | 27.9 | 24.7 | 63.2 |
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.