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 | 5.1 | 8.3 | 10.8 | 11.8 | 5.0 | 13.8 | 10.6 | 4.7 | 12.1 | 7.2 | 10.5 | 16.1 | |
| 01-05 | Agriculture products and fish | 13.7 | 9.4 | 15.5 | 23.9 | 10.8 | 24.7 | 22.3 | 9.1 | 29.3 | 28.6 | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 19.7 | 18.5 | 28.0 | 20.7 | 17.8 | 23.5 | 11.1 | 14.0 | 16.7 | 36.3 | 17.4 | 184.8 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 20.1 | 20.0 | 27.7 | 14.2 | 9.7 | 15.4 | 22.2 | 13.4 | 10.3 | 23.1 | 18.8 | 14.3 |
| 15-19 | Coal and petroleum products | 18.7 | 7.6 | 15.3 | 20.8 | 9.9 | 17.0 | 20.1 | 18.5 | 20.2 | S | 14.6 | S |
| 20-24 | Pharmaceutical and chemical products | 15.6 | 6.8 | 25.8 | 22.3 | 9.8 | 30.6 | 29.2 | 14.0 | 42.9 | 13.8 | 12.7 | 22.8 |
| 25-30 | Logs, wood products, and textile and leather | 14.9 | 28.7 | 24.6 | 29.3 | 11.4 | 35.1 | 20.8 | 7.2 | 23.3 | 7.5 | 6.7 | 12.3 |
| 31-34 | Base metal and machinery | 10.4 | 5.7 | 14.4 | 28.9 | 19.9 | 55.7 | 19.1 | 6.8 | 27.3 | 12.6 | 8.1 | 13.8 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 13.3 | 26.7 | 24.0 | 18.9 | 8.0 | 25.6 | 29.5 | 9.3 | 36.7 | 13.2 | 12.0 | 19.1 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 8.7 | 5.2 | 23.5 | 16.6 | 15.1 | 54.1 | 12.8 | 7.5 | 26.2 | 8.2 | 10.9 | 14.0 |
| -- | Commodity Unknown | 39.3 | 33.6 | 19.9 | S | 35.1 | S | S | 48.1 | S | 33.4 | 42.5 | 42.7 |
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.