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 | 4.7 | 5.1 | 7.9 | 9.4 | 5.2 | 9.7 | 17.1 | 5.9 | 25.0 | 11.8 | 6.7 | 13.5 | |
| 01-05 | Agriculture products and fish | 33.4 | 15.2 | 36.1 | 38.8 | 18.3 | 25.2 | 44.3 | 21.2 | 24.5 | S | 49.1 | S |
| 06-09 | Grains, alcohol, and tobacco products | 14.7 | 8.4 | 15.8 | 24.3 | 12.6 | 29.9 | 31.1 | 15.0 | 37.3 | S | 22.5 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 41.9 | 16.9 | 54.1 | 22.7 | 7.8 | 14.5 | 44.8 | 16.1 | 72.0 | 25.5 | 12.8 | 60.6 |
| 15-19 | Coal and petroleum products | 24.1 | 6.8 | 35.8 | 22.0 | 14.9 | 25.8 | 43.2 | 24.9 | 190.0 | S | 25.7 | S |
| 20-24 | Pharmaceutical and chemical products | 16.3 | 19.1 | 32.4 | 23.6 | 15.7 | 30.8 | 29.0 | 16.1 | 44.6 | 13.2 | 11.8 | 13.9 |
| 25-30 | Logs, wood products, and textile and leather | 14.5 | 6.8 | 17.5 | 17.8 | 11.6 | 22.4 | 41.8 | 14.0 | 65.1 | 14.6 | 14.7 | 20.6 |
| 31-34 | Base metal and machinery | 7.7 | 5.1 | 7.4 | 26.2 | 11.7 | 30.6 | 8.9 | 8.2 | 11.7 | 23.8 | 15.2 | 26.3 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 9.1 | 8.3 | 14.4 | 31.0 | 7.8 | 89.7 | 17.2 | 11.6 | 32.0 | 12.2 | 11.6 | 21.1 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 8.6 | 15.8 | 26.3 | 22.7 | 19.5 | 49.4 | 20.5 | 12.1 | 31.3 | 13.0 | 5.7 | 10.4 |
| -- | Commodity Unknown | 33.2 | 39.6 | 7.9 | 45.2 | 32.8 | 16.9 | 35.3 | S | S | 29.3 | 20.1 | 22.6 |
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.