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 | 8.0 | 4.2 | 9.9 | 10.4 | 11.8 | 18.8 | 16.9 | 8.5 | 21.1 | 12.4 | 23.0 | 44.5 |
| Single modes | 8.4 | 4.6 | 10.2 | 12.0 | 13.2 | 20.9 | 17.1 | 9.6 | 22.3 | 14.5 | 25.7 | 31.3 |
| Truck | 10.1 | 5.0 | 12.3 | 12.4 | 17.8 | 22.7 | 9.0 | 9.7 | 16.0 | 14.2 | 30.6 | 39.2 |
| Rail | 15.3 | 11.8 | 18.7 | 19.4 | 16.4 | 29.7 | 19.9 | 12.2 | 27.7 | 13.8 | 16.0 | 14.8 |
| Water | 38.9 | 28.5 | 30.2 | 43.2 | 25.9 | 35.1 | S | 29.1 | S | 24.5 | 24.6 | 42.9 |
| Air (including truck and air) | 42.8 | 49.7 | 22.5 | 32.8 | 37.5 | 13.4 | 27.5 | 34.9 | 9.3 | 21.9 | 13.5 | 26.9 |
| Pipeline | S | S | S | S | S | S | S | S | S | S | S | S |
| Multiple modes | 19.7 | 13.2 | 42.1 | 37.8 | 26.1 | 63.0 | 32.3 | 20.3 | 28.4 | 8.2 | 10.8 | 13.5 |
| Parcel, USPS or courier | 17.9 | 16.7 | 39.9 | 25.3 | 19.9 | 61.8 | 15.4 | 21.5 | 37.6 | 8.2 | 10.9 | 13.8 |
| Truck and rail | 37.0 | 27.4 | 115.5 | 47.1 | 23.0 | 422.7 | 44.9 | 23.2 | 104.4 | 39.5 | 7.9 | 16.7 |
| Other Multiple modes | 42.0 | 28.7 | 72.6 | 46.5 | 27.0 | 63.2 | 43.6 | 23.5 | 29.7 | 18.8 | 28.1 | 21.8 |
| Other and unknown modes | 33.6 | 10.0 | 39.1 | 41.2 | 21.5 | 78.3 | S | 21.3 | S | 39.4 | 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.