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 | 6.9 | 6.2 | 13.2 | 11.8 | 6.3 | 16.6 | 9.4 | 4.2 | 11.4 | 9.9 | 2.9 | 9.7 | |
| 01-05 | Agriculture products and fish | 15.6 | 10.5 | 19.8 | 22.0 | 17.3 | 19.1 | 37.2 | 44.3 | 42.8 | 18.4 | 21.5 | 37.4 |
| 06-09 | Grains, alcohol, and tobacco products | 8.3 | 3.4 | 12.3 | 9.7 | 5.5 | 11.8 | 23.6 | 12.1 | 39.2 | S | 30.1 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 14.6 | 17.5 | 18.3 | 15.7 | 15.8 | 26.0 | 20.0 | 23.3 | 20.7 | 33.8 | 15.9 | 29.1 |
| 15-19 | Coal and petroleum products | 13.3 | 10.8 | 21.8 | 13.4 | 10.3 | 17.6 | 14.1 | 24.3 | 19.5 | 24.6 | 12.6 | 16.7 |
| 20-24 | Pharmaceutical and chemical products | 9.2 | 5.1 | 15.7 | S | 13.1 | S | 15.2 | 5.9 | 17.2 | 8.3 | 5.6 | 8.9 |
| 25-30 | Logs, wood products, and textile and leather | 9.9 | 6.5 | 15.4 | S | 34.0 | S | 15.8 | 20.1 | 44.3 | 11.0 | 7.6 | 20.1 |
| 31-34 | Base metal and machinery | 10.9 | 8.7 | 13.5 | 24.9 | 11.4 | 25.7 | 16.9 | 12.7 | 21.1 | 21.8 | 12.7 | 31.3 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 17.6 | 8.0 | 33.5 | 26.1 | 11.4 | 80.4 | 14.2 | 6.2 | 55.1 | 15.7 | 9.5 | 18.6 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 8.4 | 30.0 | 47.7 | 18.4 | 20.8 | 34.0 | 31.1 | 20.4 | 49.2 | 13.0 | 9.9 | 8.4 |
| -- | Commodity Unknown | 21.7 | 30.5 | 15.9 | 49.4 | 35.9 | 74.5 | 32.5 | 28.2 | 21.3 | S | 32.0 | 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.