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 | 8.9 | 6.1 | 13.8 | 9.6 | 6.3 | 12.4 | 18.0 | 8.1 | 24.7 | 10.0 | 7.6 | 13.1 | |
| 01-05 | Agriculture products and fish | 27.4 | 7.8 | 24.3 | 40.5 | 16.6 | 44.4 | S | 29.7 | S | 27.9 | 21.5 | 83.8 |
| 06-09 | Grains, alcohol, and tobacco products | 7.9 | 6.5 | 11.4 | 11.4 | 6.6 | 14.3 | 25.2 | 8.2 | 40.4 | S | 10.0 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 45.9 | 14.9 | 64.8 | 15.2 | 13.8 | 19.2 | 21.4 | 22.7 | 20.5 | 16.3 | 25.0 | 24.9 |
| 15-19 | Coal and petroleum products | 13.3 | 8.8 | 20.4 | 13.4 | 12.1 | 17.5 | 26.3 | 13.4 | 45.5 | S | 22.4 | S |
| 20-24 | Pharmaceutical and chemical products | 7.0 | 6.0 | 10.8 | 23.4 | 29.2 | 44.6 | 20.9 | 20.1 | 42.2 | 8.0 | 11.0 | 14.7 |
| 25-30 | Logs, wood products, and textile and leather | 12.2 | 11.9 | 25.4 | 15.6 | 11.7 | 21.3 | 14.4 | 13.0 | 19.1 | 10.4 | 7.9 | 16.4 |
| 31-34 | Base metal and machinery | 7.3 | 6.6 | 9.5 | 14.3 | 6.9 | 16.4 | 21.4 | 5.6 | 20.1 | 6.7 | 15.9 | 13.1 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 23.5 | 15.2 | 45.4 | 25.8 | 9.0 | 54.6 | 30.7 | 10.0 | 67.5 | 20.5 | 6.7 | 18.4 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 8.6 | 9.5 | 21.0 | 39.9 | 9.5 | 84.9 | 22.8 | 11.4 | 41.1 | 12.1 | 7.0 | 14.9 |
| -- | Commodity Unknown | 20.2 | 27.6 | 12.1 | 37.2 | 34.3 | 13.1 | 47.7 | 17.1 | 118.4 | 27.8 | 19.1 | 29.9 |
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.