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 | 19.2 | 13.2 | 29.3 | 15.0 | 13.7 | 32.7 | 15.8 | 16.9 | 36.8 | 12.5 | 7.1 | 18.4 |
| Single modes | 22.4 | 16.0 | 34.3 | 15.0 | 13.9 | 32.5 | 16.4 | 17.3 | 37.6 | 10.7 | 17.0 | 15.2 |
| Truck | 21.0 | 13.1 | 33.8 | 17.3 | 14.7 | 34.8 | 11.2 | 13.6 | 24.7 | 12.3 | 16.5 | 17.3 |
| Rail | 44.8 | 48.0 | 127.1 | 41.2 | S | S | 45.8 | S | S | 36.6 | 28.9 | 29.0 |
| Water | – | – | – | – | – | – | – | – | – | – | – | – |
| Air (including truck and air) | S | 36.1 | S | 37.9 | 46.7 | 12.6 | S | S | S | 4.7 | 9.2 | 12.2 |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | 9.8 | 12.7 | 20.3 | S | 23.9 | S | 30.9 | 19.6 | 68.8 | 4.2 | 4.5 | 7.3 |
| Parcel, USPS or courier | 9.8 | 13.3 | 21.4 | 30.7 | 15.0 | 85.9 | 34.7 | 16.1 | 128.8 | 4.2 | 4.5 | 7.4 |
| Truck and rail | 38.3 | 36.4 | 20.5 | S | 47.7 | S | S | 38.2 | S | S | S | S |
| Other Multiple modes | S | S | S | S | S | S | S | S | S | 33.2 | 31.9 | 22.3 |
| Other and unknown modes | 32.9 | 22.7 | 59.2 | 47.9 | 38.1 | 107.1 | 47.9 | 40.5 | 109.2 | 33.0 | 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.