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 | 5.7 | 8.0 | 11.7 | 6.4 | 8.4 | 7.7 | 11.7 | 8.4 | 17.0 | 8.3 | 11.6 | 11.5 |
| Single modes | 5.9 | 8.1 | 12.4 | 6.8 | 8.9 | 8.4 | 13.2 | 7.2 | 18.0 | 7.7 | 15.9 | 13.3 |
| Truck | 5.7 | 7.7 | 12.4 | 7.8 | 10.0 | 8.8 | 11.6 | 5.2 | 14.4 | 8.0 | 16.6 | 14.4 |
| Rail | 8.6 | 12.5 | 10.2 | 20.9 | 16.3 | 36.2 | 29.3 | 25.3 | 50.2 | 12.6 | 28.3 | 41.3 |
| Water | S | S | S | 48.0 | S | S | S | S | S | 33.7 | 34.2 | 180.7 |
| Air (including truck and air) | 40.7 | 41.7 | 30.7 | 27.5 | 25.1 | 11.9 | 22.9 | 27.3 | 12.5 | 3.9 | 4.6 | 6.4 |
| Pipeline | 32.5 | 34.3 | 33.2 | 32.1 | 35.0 | 27.8 | S | S | S | S | S | S |
| Multiple modes | 13.1 | 11.3 | 17.1 | 34.1 | 27.9 | 39.6 | 34.9 | 35.5 | 71.6 | 6.3 | 7.1 | 8.6 |
| Parcel, USPS or courier | 13.3 | 11.8 | 17.9 | 16.1 | 15.0 | 22.6 | 17.9 | 21.7 | 24.6 | 6.3 | 7.1 | 8.6 |
| Truck and rail | 23.6 | 21.5 | 19.3 | 11.8 | S | S | 18.5 | 18.3 | 13.4 | 13.5 | 13.1 | 22.9 |
| Other Multiple modes | 29.3 | 30.9 | 15.8 | 39.7 | 29.0 | 70.2 | 41.7 | S | S | 20.4 | 44.0 | 157.4 |
| Other and unknown modes | 19.8 | 16.5 | 25.3 | 23.8 | 32.9 | 12.5 | 16.0 | 28.2 | 12.0 | 36.7 | 18.5 | 27.9 |
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.