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 | 3.7 | 6.3 | 7.7 | 8.0 | 5.0 | 11.4 | 8.0 | 11.4 | 15.6 | 7.3 | 6.9 | 8.9 | |
| 01-05 | Agriculture products and fish | 15.0 | 13.8 | 24.4 | 24.8 | 8.6 | 34.9 | 22.0 | 12.3 | 40.7 | S | 26.5 | S |
| 06-09 | Grains, alcohol, and tobacco products | 12.5 | 19.3 | 15.2 | 25.3 | 7.7 | 23.0 | 31.0 | 7.6 | 28.1 | 25.1 | 34.5 | 26.6 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 14.0 | 20.0 | 21.1 | 27.6 | 16.8 | 34.8 | 17.4 | 12.4 | 16.5 | S | 18.5 | S |
| 15-19 | Coal and petroleum products | 18.3 | 7.4 | 26.0 | 16.2 | 9.2 | 22.5 | 16.2 | 19.7 | 29.6 | 30.4 | 26.7 | 50.8 |
| 20-24 | Pharmaceutical and chemical products | 11.1 | 17.1 | 20.8 | 21.0 | 18.7 | 35.7 | 16.9 | 26.2 | 26.6 | 10.0 | 11.1 | 19.4 |
| 25-30 | Logs, wood products, and textile and leather | 11.7 | 19.7 | 18.7 | 20.4 | 12.0 | 25.4 | 19.1 | 5.0 | 22.8 | 11.5 | 11.5 | 20.7 |
| 31-34 | Base metal and machinery | 10.4 | 4.4 | 13.8 | 10.5 | 9.0 | 17.6 | 17.6 | 9.9 | 33.8 | 11.8 | 12.3 | 15.1 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 12.3 | 17.8 | 17.8 | 22.7 | 12.2 | 47.0 | 21.1 | 11.8 | 44.3 | 14.3 | 9.7 | 13.3 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 9.7 | 19.5 | 32.8 | 16.4 | 14.1 | 30.9 | 12.8 | 10.9 | 18.8 | 11.3 | 12.3 | 11.9 |
| -- | Commodity Unknown | S | 16.0 | S | S | 28.3 | S | S | 26.5 | S | S | 11.7 | 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.