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 | 4.9 | 4.6 | 9.1 | 11.9 | 10.8 | 19.0 | 8.6 | 6.4 | 15.4 | 15.3 | 9.4 | 29.0 | |
| 01-05 | Agriculture products and fish | 19.2 | 13.4 | 16.3 | 25.6 | 10.3 | 34.8 | 26.0 | 13.7 | 56.0 | S | 14.5 | S |
| 06-09 | Grains, alcohol, and tobacco products | 21.0 | 7.8 | 28.3 | 22.8 | 11.2 | 32.9 | 22.2 | 9.0 | 24.0 | S | 26.5 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 20.6 | 16.9 | 31.6 | 30.1 | 22.2 | 37.3 | 25.6 | 18.9 | 30.3 | 45.6 | 23.4 | 37.5 |
| 15-19 | Coal and petroleum products | 27.5 | 21.2 | 44.0 | 18.1 | 25.2 | 34.2 | 16.7 | 24.7 | 35.3 | 18.1 | 25.0 | 47.9 |
| 20-24 | Pharmaceutical and chemical products | 22.4 | 22.4 | 38.3 | 23.6 | 25.2 | 40.0 | 24.0 | 21.0 | 61.4 | 25.3 | 11.7 | 20.7 |
| 25-30 | Logs, wood products, and textile and leather | 9.8 | 21.4 | 23.0 | 26.6 | 9.5 | 43.1 | 40.5 | 14.4 | 73.5 | 11.1 | 11.1 | 19.0 |
| 31-34 | Base metal and machinery | 12.5 | 5.3 | 17.2 | 13.6 | 6.7 | 19.3 | 9.7 | 9.0 | 17.2 | 16.3 | 15.4 | 21.4 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 9.3 | 7.1 | 17.4 | 18.5 | 7.2 | 31.0 | 18.4 | 8.0 | 31.9 | 15.8 | 9.4 | 47.5 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 12.9 | 8.7 | 38.6 | 15.7 | 11.1 | 33.4 | 19.8 | 10.3 | 44.6 | 18.9 | 8.5 | 14.7 |
| -- | Commodity Unknown | 30.7 | S | S | S | 34.8 | S | 28.5 | 41.6 | 10.5 | S | 26.1 | 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.