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 | 6.1 | 3.7 | 7.9 | 21.7 | 9.1 | 28.5 | 8.0 | 12.0 | 18.4 | 11.9 | 7.2 | 12.2 |
| Single modes | 7.8 | 3.6 | 9.9 | 24.6 | 8.0 | 30.8 | 9.1 | 11.4 | 18.1 | 26.8 | 10.2 | 24.3 |
| Truck | 8.9 | 4.5 | 11.5 | 35.7 | 9.9 | 47.3 | 22.1 | 12.0 | 33.3 | 31.8 | 8.5 | 37.7 |
| Rail | 20.4 | 15.8 | 19.7 | 9.4 | 18.2 | 16.4 | 19.6 | 20.4 | 20.4 | 8.4 | 5.7 | 11.9 |
| Water | 19.6 | 26.9 | 49.7 | 16.8 | 20.9 | 64.1 | 18.9 | 26.7 | 82.6 | 25.1 | 13.5 | 16.9 |
| Air (including truck and air) | 22.2 | 10.9 | 47.1 | 16.4 | 17.0 | 12.8 | 15.4 | 20.4 | 12.6 | 3.6 | 3.4 | 5.2 |
| Pipeline | S | 34.2 | S | S | 36.7 | S | S | S | S | S | S | S |
| Multiple modes | 8.1 | 7.1 | 10.5 | 14.7 | 25.7 | 43.4 | 16.5 | 26.0 | 48.8 | 5.6 | 5.7 | 7.9 |
| Parcel, USPS or courier | 9.0 | 6.6 | 11.9 | 18.9 | 14.3 | 18.1 | 14.3 | 18.1 | 14.7 | 5.6 | 5.6 | 7.8 |
| Truck and rail | S | 41.0 | S | S | 26.2 | S | S | 25.3 | S | 24.7 | 9.3 | 22.5 |
| Other Multiple modes | 20.0 | 24.4 | 44.8 | 15.3 | 27.3 | 46.5 | 17.2 | 28.0 | 54.7 | 18.5 | S | S |
| Other and unknown modes | 29.2 | 11.6 | 24.5 | 25.1 | 38.3 | 37.9 | 32.7 | 46.9 | 24.8 | 38.3 | 31.0 | 15.6 |
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.