Table B-10. Estimated Measures of Reliability for Shipment Characteristics by Commodity Group for State of Origin: 2002 and 1997
Monday, July 2, 2012
Table B-10. Estimated Measures of Reliability for Shipment Characteristics by Commodity Group 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]
| Code | Commodity (2-digit SCTG) | 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 Commodities | 5.4 | 3.5 | 7.8 | 7.8 | 8.5 | 10.4 | 9.4 | 3.4 | 9.9 | 7.7 | 13.0 | 15.2 | |
| 01-05 | Agriculture products and fish | 23.9 | 10.3 | 18.2 | 41.8 | 11.4 | 39.9 | S | 15.4 | S | 31.7 | 24.1 | 15.1 |
| 06-09 | Grains, alcohol, and tobacco products | 11.9 | 4.8 | 13.5 | 39.1 | 5.0 | 64.5 | 20.9 | 13.5 | 31.5 | 19.6 | 9.8 | 75.4 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 30.9 | 9.0 | 52.0 | 16.3 | 12.2 | 16.8 | 26.0 | 13.4 | 30.7 | 32.1 | 13.6 | 48.1 |
| 15-19 | Coal and petroleum products | 14.8 | 39.2 | 42.9 | 18.6 | 26.9 | 33.4 | 47.3 | 27.2 | 64.3 | 18.9 | 17.2 | 18.3 |
| 20-24 | Pharmaceutical and chemical products | 18.5 | 5.2 | 30.7 | 23.9 | 10.7 | 27.8 | 32.8 | 12.5 | 45.2 | 8.0 | 13.9 | 37.3 |
| 25-30 | Logs, wood products, and textile and leather | 25.7 | 6.4 | 30.5 | 10.1 | 5.4 | 9.9 | 11.3 | 8.3 | 14.7 | 6.6 | 15.1 | 20.5 |
| 31-34 | Base metal and machinery | 8.1 | 7.2 | 11.7 | 7.5 | 21.0 | 13.5 | 15.0 | 10.9 | 13.8 | 17.0 | 8.0 | 22.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 9.1 | 4.9 | 12.9 | 11.2 | 11.4 | 14.8 | 15.5 | 10.6 | 18.5 | 15.8 | 15.1 | 39.0 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 17.5 | 8.5 | 28.6 | 27.5 | 10.2 | 44.1 | 20.0 | 8.4 | 26.0 | 15.7 | 8.7 | 19.5 |
| -- | Commodity Unknown | 29.8 | 24.8 | 54.4 | 38.8 | 36.9 | 32.4 | 39.0 | S | S | 42.2 | 23.2 | 33.0 |
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.