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 | 18.9 | 5.2 | 28.4 | 11.5 | 9.0 | 12.2 | 28.1 | 21.0 | 37.9 | 8.9 | 8.3 | 14.5 |
| Single modes | 20.9 | 5.1 | 33.3 | 11.8 | 9.1 | 12.3 | 30.0 | 23.0 | 40.6 | 11.7 | 11.0 | 14.9 |
| Truck | 19.2 | 4.5 | 31.7 | 11.4 | 10.4 | 13.3 | 26.5 | 7.0 | 38.9 | 9.0 | 10.6 | 16.2 |
| Rail | S | 42.6 | S | S | S | S | S | S | S | 33.5 | 10.5 | 43.4 |
| Water | S | S | S | S | 43.1 | S | S | S | S | S | S | S |
| Air (including truck and air) | S | 20.6 | S | 30.5 | S | S | 49.4 | S | S | 5.8 | 2.3 | 6.5 |
| Pipeline | – | S | S | – | S | S | S | S | S | S | S | S |
| Multiple modes | 18.5 | 11.7 | 25.6 | 26.1 | 10.8 | 38.2 | 28.1 | 14.4 | 29.2 | 5.0 | 7.5 | 10.7 |
| Parcel, USPS or courier | 18.9 | 12.1 | 26.4 | 28.5 | 12.5 | 46.7 | 14.7 | 15.0 | 21.2 | 5.0 | 7.5 | 10.7 |
| Truck and rail | S | S | S | S | 22.2 | S | S | 24.1 | S | 29.9 | 19.8 | 29.0 |
| Other Multiple modes | S | 30.2 | S | S | 30.5 | S | S | 46.6 | S | 41.7 | S | S |
| Other and unknown modes | 16.9 | 32.4 | 48.5 | 17.6 | 14.9 | 48.3 | 35.1 | 28.4 | 76.0 | 38.8 | S | S |
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.