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 | 6.6 | 6.3 | 11.8 | 16.3 | 5.3 | 23.6 | 14.2 | 8.3 | 15.8 | 15.0 | 10.9 | 29.8 | |
| 01-05 | Agriculture products and fish | 9.5 | 16.2 | 22.9 | 21.6 | 8.4 | 32.4 | 23.6 | 16.9 | 31.3 | 49.3 | 29.4 | 46.7 |
| 06-09 | Grains, alcohol, and tobacco products | 17.3 | 10.5 | 19.1 | 29.6 | 13.5 | 46.9 | 26.8 | 25.5 | 46.5 | 31.1 | 46.3 | 41.8 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 38.6 | 26.2 | 47.5 | 25.9 | 20.7 | 49.3 | 40.1 | 20.2 | 40.8 | 39.1 | 21.1 | 35.7 |
| 15-19 | Coal and petroleum products | 22.7 | 17.3 | 38.5 | 25.2 | 22.1 | 36.5 | 26.3 | 27.8 | 14.7 | 37.1 | 31.1 | 20.4 |
| 20-24 | Pharmaceutical and chemical products | 21.5 | 7.5 | 23.5 | 20.9 | 18.7 | 15.3 | 26.5 | 24.2 | 13.4 | 21.4 | 11.8 | 35.3 |
| 25-30 | Logs, wood products, and textile and leather | 40.1 | 35.4 | 57.2 | 11.3 | 13.1 | 9.4 | 29.5 | 21.3 | 20.9 | 10.2 | 11.8 | 26.2 |
| 31-34 | Base metal and machinery | 31.9 | 5.7 | 39.2 | 40.7 | 9.8 | 101.2 | 38.1 | 10.9 | 90.2 | 22.1 | 16.7 | 29.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 9.0 | 17.3 | 30.3 | 30.0 | 14.0 | 96.2 | 22.9 | 20.4 | 59.8 | 23.7 | 16.8 | 37.0 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 17.2 | 9.2 | 36.9 | 17.5 | 20.3 | 41.2 | 24.5 | 17.8 | 53.1 | 15.3 | 13.6 | 25.8 |
| -- | Commodity Unknown | 32.0 | 42.0 | 15.4 | S | S | S | 40.8 | S | S | 30.8 | 38.3 | 55.1 |
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.