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 | 13.8 | 5.4 | 20.2 | 10.3 | 6.5 | 13.8 | 6.4 | 6.4 | 10.3 | 14.3 | 8.1 | 15.3 |
| Single modes | 15.3 | 5.8 | 23.0 | 10.6 | 6.5 | 13.7 | 6.5 | 6.9 | 10.4 | 10.4 | 9.9 | 11.6 |
| Truck | 18.6 | 5.6 | 27.4 | 14.2 | 9.8 | 16.9 | 11.0 | 9.2 | 15.0 | 10.3 | 5.4 | 10.7 |
| Rail | 34.9 | 31.3 | 80.5 | 13.3 | 17.9 | 42.6 | 15.2 | 14.8 | 27.3 | 11.7 | 8.0 | 10.8 |
| Water | 36.7 | 30.7 | 27.8 | 31.4 | 29.5 | 25.1 | 33.5 | 28.5 | 25.6 | 18.4 | 15.4 | 21.9 |
| Air (including truck and air) | 21.9 | 27.5 | 12.8 | S | 44.7 | S | S | 41.0 | S | 4.0 | 2.5 | 5.6 |
| Pipeline | 25.3 | 28.0 | 67.5 | 22.7 | 36.2 | 79.4 | S | S | S | S | S | S |
| Multiple modes | 13.2 | 8.0 | 18.3 | 29.7 | 34.1 | 186.8 | 29.9 | 25.6 | 124.0 | 6.9 | 4.5 | 7.7 |
| Parcel, USPS or courier | 14.5 | 9.3 | 20.3 | 19.6 | 7.3 | 22.2 | 22.5 | 9.5 | 21.3 | 6.9 | 4.5 | 7.7 |
| Truck and rail | 25.6 | 33.5 | 46.8 | 32.9 | S | S | 34.1 | 49.1 | 336.4 | 19.6 | 26.9 | 27.1 |
| Other Multiple modes | S | S | S | 42.9 | S | S | 46.9 | S | S | S | S | S |
| Other and unknown modes | 19.8 | 16.3 | 18.2 | 42.3 | 28.3 | 109.7 | 47.0 | 36.4 | 77.1 | S | 24.6 | 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.