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 | 6.5 | 5.2 | 14.7 | 11.0 | 6.4 | 16.6 | 15.7 | 4.5 | 22.4 | 7.1 | 6.4 | 14.1 |
| Single modes | 7.3 | 5.3 | 15.8 | 11.1 | 6.2 | 16.9 | 16.4 | 4.3 | 23.6 | 7.8 | 7.8 | 14.6 |
| Truck | 7.2 | 5.7 | 15.2 | 11.3 | 7.3 | 16.1 | 8.3 | 6.4 | 12.7 | 8.7 | 6.5 | 13.8 |
| Rail | 24.0 | 10.4 | 33.0 | 38.2 | 15.4 | 58.9 | 32.4 | 15.2 | 46.1 | 12.2 | 9.8 | 13.4 |
| Water | S | S | S | S | S | S | S | S | S | S | S | S |
| Air (including truck and air) | 22.6 | 15.7 | 283.7 | S | 18.3 | S | S | 14.1 | S | 2.2 | 3.4 | 4.5 |
| Pipeline | S | 37.6 | S | S | 49.4 | S | S | S | S | S | S | S |
| Multiple modes | 9.1 | 6.0 | 23.7 | 30.4 | 45.2 | 36.0 | 33.5 | 15.8 | 46.0 | 6.9 | 5.6 | 11.4 |
| Parcel, USPS or courier | 10.4 | 6.6 | 28.0 | 13.6 | 11.8 | 24.1 | 17.9 | 20.4 | 41.8 | 6.9 | 5.7 | 11.4 |
| Truck and rail | S | 33.2 | S | 32.5 | S | S | 38.4 | 22.3 | 48.8 | 10.2 | 14.5 | 29.3 |
| Other Multiple modes | S | S | S | S | 42.0 | S | S | 48.2 | S | 36.5 | 41.8 | 52.5 |
| Other and unknown modes | 14.6 | 29.0 | 31.9 | 26.1 | 25.0 | 30.1 | 35.3 | 26.7 | 33.4 | 18.7 | 17.0 | 32.0 |
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.