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 | 4.9 | 4.6 | 9.1 | 11.9 | 10.8 | 19.0 | 8.6 | 6.4 | 15.4 | 15.3 | 9.4 | 29.0 |
| Single modes | 5.6 | 5.3 | 10.5 | 12.1 | 10.5 | 19.0 | 8.8 | 5.4 | 14.8 | 18.6 | 17.9 | 15.2 |
| Truck | 5.8 | 5.4 | 10.9 | 14.3 | 10.3 | 20.4 | 7.7 | 4.5 | 12.4 | 19.0 | 18.0 | 19.9 |
| Rail | 10.6 | 12.6 | 15.9 | 17.0 | 18.8 | 24.6 | 17.8 | 10.3 | 31.1 | 6.9 | 9.7 | 15.2 |
| Water | 49.5 | 47.4 | 66.8 | 38.7 | 41.7 | 106.1 | 17.0 | 33.3 | 49.1 | S | S | S |
| Air (including truck and air) | S | 21.2 | S | S | 23.3 | S | S | 35.7 | S | 8.6 | 5.1 | 11.6 |
| Pipeline | S | 25.5 | S | S | 27.1 | S | S | S | S | S | S | S |
| Multiple modes | 13.2 | 12.5 | 26.1 | 37.7 | S | S | 38.4 | 36.9 | 85.1 | 9.3 | 6.4 | 15.9 |
| Parcel, USPS or courier | 10.3 | 10.3 | 22.1 | 13.1 | 8.5 | 18.8 | 16.9 | 7.3 | 26.4 | 9.4 | 6.5 | 16.0 |
| Truck and rail | 34.6 | 30.2 | 55.3 | 39.9 | S | S | 26.6 | 30.5 | 40.1 | 11.6 | 6.1 | 13.7 |
| Other Multiple modes | S | S | S | S | S | S | S | S | S | 23.1 | S | S |
| Other and unknown modes | 31.3 | 16.9 | 53.4 | 21.5 | 26.2 | 47.3 | 25.2 | 31.2 | 52.3 | 24.9 | 22.9 | 26.7 |
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.