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 | 13.3 | 6.5 | 23.4 | 10.4 | 10.5 | 12.8 | 16.3 | 14.2 | 29.7 | 14.8 | 8.1 | 29.0 |
| Single modes | 13.9 | 6.6 | 24.6 | 10.7 | 11.0 | 13.5 | 16.5 | 14.0 | 32.2 | 17.1 | 12.4 | 39.5 |
| Truck | 14.6 | 8.1 | 27.9 | 7.8 | 10.3 | 11.1 | 25.3 | 6.9 | 52.8 | 18.4 | 12.7 | 40.8 |
| Rail | 13.1 | 15.5 | 17.9 | 19.0 | 28.8 | 23.4 | 18.2 | 31.3 | 29.2 | 5.7 | 7.1 | 11.2 |
| Water | 37.9 | 42.3 | 66.0 | 42.6 | S | S | 47.5 | S | S | 26.1 | S | S |
| Air (including truck and air) | S | 18.5 | S | S | S | S | 49.5 | S | S | 12.6 | 2.8 | 15.1 |
| Pipeline | 37.6 | 44.3 | 92.2 | 36.9 | 44.8 | 76.9 | S | S | S | S | S | S |
| Multiple modes | 20.9 | 9.3 | 43.1 | 23.0 | 19.9 | 47.6 | 20.3 | 29.0 | 48.1 | 8.3 | 4.4 | 11.2 |
| Parcel, USPS or courier | 28.1 | 13.0 | 60.7 | 30.3 | 13.6 | 49.7 | 24.9 | 14.0 | 45.2 | 8.6 | 4.5 | 11.5 |
| Truck and rail | 31.0 | 26.5 | 71.6 | 27.9 | 27.7 | 87.3 | 23.4 | 33.9 | 60.8 | 6.7 | 9.9 | 10.5 |
| Other Multiple modes | S | 49.2 | S | S | 42.1 | S | S | 42.8 | S | 29.1 | S | S |
| Other and unknown modes | 25.2 | 20.8 | 27.8 | 37.1 | 39.4 | 25.6 | 32.9 | S | S | S | 23.1 | 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.