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 | 4.7 | 5.1 | 7.9 | 9.4 | 5.2 | 9.7 | 17.1 | 5.9 | 25.0 | 11.8 | 6.7 | 13.5 |
| Single modes | 5.2 | 5.8 | 9.0 | 9.2 | 5.1 | 9.5 | 14.9 | 5.7 | 21.8 | 20.4 | 8.0 | 26.9 |
| Truck | 4.8 | 6.0 | 8.9 | 9.6 | 5.5 | 9.9 | 11.8 | 7.0 | 16.2 | 20.9 | 8.4 | 25.9 |
| Rail | 25.6 | 16.3 | 31.4 | 29.2 | 27.8 | 28.3 | 27.4 | 19.6 | 32.1 | 17.0 | 11.2 | 19.3 |
| Water | 43.6 | 45.9 | 22.3 | S | S | S | 40.2 | S | S | 23.7 | S | S |
| Air (including truck and air) | 17.7 | 12.9 | 25.4 | S | 9.8 | S | S | 13.6 | S | 6.3 | 3.5 | 8.6 |
| Pipeline | 50.0 | S | S | 47.0 | S | S | S | S | S | S | S | S |
| Multiple modes | 11.9 | 7.7 | 16.4 | 40.8 | 8.4 | 64.9 | S | 14.5 | S | 5.5 | 6.8 | 9.1 |
| Parcel, USPS or courier | 12.0 | 7.7 | 15.4 | 12.1 | 5.4 | 11.7 | 12.7 | 6.4 | 14.2 | 5.6 | 6.8 | 9.1 |
| Truck and rail | 41.0 | 18.8 | 27.3 | 24.7 | 23.5 | 16.6 | 23.5 | 28.4 | 17.4 | 10.6 | 12.4 | 19.4 |
| Other Multiple modes | S | 35.2 | S | S | S | S | S | 46.2 | S | 24.1 | 48.4 | 113.2 |
| Other and unknown modes | 21.1 | 11.0 | 20.3 | 30.6 | 25.9 | 42.5 | 31.5 | 23.6 | 16.2 | 48.0 | 27.9 | 104.0 |
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.