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 | 5.4 | 3.5 | 7.8 | 7.8 | 8.5 | 10.4 | 9.4 | 3.4 | 9.9 | 7.7 | 13.0 | 15.2 |
| Single modes | 7.1 | 4.7 | 10.4 | 7.8 | 9.0 | 10.8 | 8.7 | 3.9 | 9.3 | 18.3 | 12.3 | 43.3 |
| Truck | 7.7 | 4.3 | 11.8 | 8.3 | 10.1 | 11.6 | 10.3 | 6.4 | 13.4 | 7.8 | 12.6 | 18.5 |
| Rail | 18.4 | 14.2 | 10.7 | 20.5 | 10.6 | 16.9 | 16.3 | 8.4 | 13.8 | 8.2 | 4.4 | 11.0 |
| Water | 40.8 | 28.9 | 58.2 | 29.1 | 20.3 | 33.1 | 28.5 | 20.7 | 28.5 | 28.4 | 12.6 | 18.4 |
| Air (including truck and air) | 28.7 | 19.4 | 37.6 | 32.6 | 33.5 | 17.7 | 31.0 | 28.8 | 21.9 | 5.0 | 3.7 | 7.2 |
| Pipeline | 44.2 | 43.7 | 166.9 | S | 44.0 | S | S | S | S | S | S | S |
| Multiple modes | 11.6 | 9.1 | 21.6 | 29.9 | 20.0 | 32.6 | 31.7 | 14.4 | 40.8 | 5.4 | 6.9 | 7.7 |
| Parcel, USPS or courier | 7.9 | 5.8 | 14.4 | 17.1 | 7.3 | 24.8 | 17.5 | 12.0 | 30.4 | 5.4 | 7.4 | 8.1 |
| Truck and rail | 26.7 | 20.5 | 48.2 | 22.3 | 13.9 | 29.3 | 22.5 | 13.5 | 25.9 | 7.6 | 6.6 | 8.5 |
| Other Multiple modes | 23.9 | 32.8 | 94.5 | 35.5 | 24.1 | 36.7 | 39.5 | 22.0 | 56.0 | 44.0 | 43.0 | 59.9 |
| Other and unknown modes | 37.9 | 26.5 | 32.5 | 40.8 | 45.5 | 42.7 | 31.3 | 28.0 | 19.7 | 41.2 | 28.4 | 71.4 |
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.