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 | 3.6 | 3.4 | 6.1 | 12.4 | 11.1 | 16.4 | 7.1 | 6.6 | 10.9 | 9.2 | 6.4 | 13.1 | |
| 01-05 | Agriculture products and fish | 18.5 | 5.8 | 29.0 | 24.0 | 10.7 | 27.8 | 14.8 | 8.8 | 25.1 | 10.1 | 46.8 | 313.0 |
| 06-09 | Grains, alcohol, and tobacco products | 14.7 | 11.1 | 24.8 | 13.4 | 22.8 | 28.5 | 13.0 | 21.3 | 33.8 | 32.0 | 17.1 | 70.1 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 25.3 | 11.1 | 32.3 | 28.5 | 25.1 | 33.4 | 20.2 | 10.1 | 26.5 | 39.6 | 33.3 | 87.1 |
| 15-19 | Coal and petroleum products | 19.7 | 37.7 | 41.1 | 32.3 | 42.5 | 55.9 | 38.4 | 41.2 | 24.9 | 19.3 | 13.9 | 10.0 |
| 20-24 | Pharmaceutical and chemical products | 14.3 | 6.5 | 21.4 | 11.8 | 10.1 | 13.4 | 15.0 | 8.3 | 17.1 | 12.7 | 14.4 | 17.9 |
| 25-30 | Logs, wood products, and textile and leather | 12.4 | 4.7 | 15.4 | 9.4 | 10.6 | 18.1 | 8.3 | 9.6 | 14.6 | 9.2 | 7.7 | 14.3 |
| 31-34 | Base metal and machinery | 14.6 | 7.6 | 18.3 | 19.9 | 23.8 | 27.2 | 29.1 | 12.4 | 44.1 | 11.8 | 13.1 | 16.5 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 14.3 | 6.7 | 14.0 | 18.3 | 13.0 | 23.3 | 18.6 | 13.4 | 17.7 | 10.3 | 13.0 | 21.6 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 12.6 | 17.3 | 41.3 | 18.1 | 13.4 | 19.8 | 8.3 | 18.2 | 12.9 | 17.3 | 9.5 | 23.5 |
| -- | Commodity Unknown | 42.1 | 26.7 | 36.1 | S | 43.3 | S | S | 38.1 | S | 18.9 | 22.8 | 40.1 |
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.