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 | 9.5 | 6.1 | 15.0 | 10.5 | 12.5 | 14.2 | 5.7 | 9.8 | 13.8 | 15.4 | 5.2 | 25.2 |
| Single modes | 10.6 | 6.2 | 15.8 | 10.1 | 12.8 | 13.8 | 7.0 | 10.3 | 14.2 | 14.3 | 5.5 | 28.3 |
| Truck | 11.0 | 6.3 | 17.2 | 12.6 | 14.0 | 15.4 | 9.4 | 6.2 | 14.3 | 14.5 | 5.8 | 29.0 |
| Rail | 13.5 | 35.7 | 21.8 | 15.6 | 29.5 | 30.8 | 14.0 | 17.3 | 18.6 | 12.8 | 16.0 | 23.0 |
| Water | S | 40.8 | S | 38.2 | 32.8 | 74.9 | 34.3 | 33.6 | 62.2 | 20.4 | 43.0 | 94.2 |
| Air (including truck and air) | S | 39.4 | S | 37.2 | 29.8 | 97.0 | 32.0 | 41.7 | 78.1 | 5.3 | 5.3 | 9.9 |
| Pipeline | S | S | S | S | S | S | S | S | S | S | S | S |
| Multiple modes | 23.5 | 6.7 | 48.1 | 28.8 | 42.1 | 117.8 | 34.4 | 28.4 | 175.2 | 20.1 | 6.5 | 18.3 |
| Parcel, USPS or courier | 32.8 | 9.4 | 58.0 | 33.5 | 8.6 | 88.1 | 32.5 | 11.1 | 81.8 | 20.2 | 6.6 | 18.3 |
| Truck and rail | 21.7 | 25.0 | 113.1 | 26.1 | 18.4 | 175.3 | 25.7 | 17.1 | 116.3 | 10.1 | 6.9 | 10.9 |
| Other Multiple modes | S | S | S | S | S | S | S | S | S | S | S | S |
| Other and unknown modes | 33.4 | 26.8 | 71.9 | S | 25.8 | S | S | 27.3 | S | 38.4 | 31.4 | 102.2 |
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.