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 | 13.6 | 14.6 | 19.5 | 8.2 | 11.8 | 15.3 | 12.8 | 12.6 | 21.5 | 7.4 | 10.0 | 12.0 |
| Single modes | 16.9 | 16.1 | 22.2 | 8.9 | 12.0 | 15.9 | 9.4 | 14.1 | 18.7 | 14.5 | 15.2 | 13.5 |
| Truck | 17.6 | 16.0 | 23.1 | 7.4 | 13.4 | 14.6 | 10.5 | 5.8 | 13.5 | 15.0 | 14.0 | 14.4 |
| Rail | 39.6 | 33.0 | 22.8 | 26.0 | 20.8 | 52.1 | 35.0 | 14.9 | 74.7 | 12.0 | S | S |
| Water | 29.2 | 28.4 | 173.7 | 30.3 | 32.8 | 142.8 | 38.1 | 45.9 | 202.8 | 19.5 | S | S |
| Air (including truck and air) | 16.5 | 42.8 | 16.9 | S | 26.4 | S | S | 35.8 | S | 8.4 | 9.6 | 13.7 |
| Pipeline | 33.1 | S | S | 39.0 | S | S | S | S | S | S | S | S |
| Multiple modes | 16.1 | 12.6 | 22.7 | 35.2 | 15.1 | 57.4 | S | 18.3 | S | 5.4 | 8.6 | 12.0 |
| Parcel, USPS or courier | 16.3 | 12.8 | 22.7 | 13.3 | 12.8 | 16.1 | 9.1 | 19.4 | 18.8 | 5.4 | 8.6 | 12.0 |
| Truck and rail | S | 27.3 | S | 48.0 | 34.8 | 61.5 | 47.9 | 34.0 | 76.6 | 20.3 | 31.3 | 76.2 |
| Other Multiple modes | 44.2 | 48.9 | 189.0 | S | 43.1 | S | S | S | S | S | 27.4 | S |
| Other and unknown modes | 21.9 | 11.3 | 21.5 | 38.4 | 25.1 | 42.9 | S | 20.8 | S | S | 27.3 | 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.