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 | 4.0 | 3.4 | 6.1 | 9.6 | 8.5 | 15.2 | 5.8 | 4.6 | 9.3 | 8.4 | 4.7 | 11.0 | |
| 01-05 | Agriculture products and fish | 18.8 | 5.6 | 25.9 | 33.8 | 13.1 | 51.2 | 22.6 | 11.2 | 54.3 | 41.9 | 24.4 | 65.2 |
| 06-09 | Grains, alcohol, and tobacco products | 11.7 | 4.5 | 14.0 | 10.5 | 9.4 | 13.5 | 12.8 | 8.4 | 18.2 | 18.5 | 21.4 | 34.6 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 10.8 | 21.6 | 22.8 | 23.9 | 23.3 | 37.6 | 20.5 | 17.7 | 44.5 | S | 29.4 | S |
| 15-19 | Coal and petroleum products | 8.7 | 9.9 | 14.9 | 8.7 | 8.7 | 13.1 | 17.5 | 13.3 | 27.0 | S | 24.4 | S |
| 20-24 | Pharmaceutical and chemical products | 6.7 | 4.9 | 9.9 | 29.4 | 20.1 | 68.2 | 19.1 | 5.9 | 30.5 | 13.2 | 8.1 | 21.1 |
| 25-30 | Logs, wood products, and textile and leather | 15.3 | 7.1 | 19.0 | 12.6 | 11.5 | 12.5 | 8.4 | 8.7 | 9.4 | 6.5 | 6.9 | 9.3 |
| 31-34 | Base metal and machinery | 11.2 | 4.0 | 14.1 | 21.9 | 10.8 | 35.8 | 26.6 | 7.7 | 34.5 | 18.7 | 8.4 | 22.5 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 7.7 | 3.9 | 9.2 | 34.5 | 10.7 | 59.0 | 11.5 | 20.4 | 19.6 | 7.5 | 5.1 | 10.3 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 9.8 | 21.3 | 34.4 | 17.1 | 14.9 | 30.3 | 14.1 | 26.6 | 30.5 | 13.6 | 8.1 | 14.6 |
| -- | Commodity Unknown | 42.4 | 28.3 | 28.3 | 40.9 | S | S | 34.3 | 31.3 | 12.0 | 17.4 | 25.0 | 34.5 |
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.