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 | 8.5 | 5.3 | 13.4 | 5.1 | 7.4 | 10.2 | 6.6 | 13.8 | 14.1 | 8.0 | 10.8 | 12.7 | |
| 01-05 | Agriculture products and fish | 20.2 | 11.4 | 21.5 | 25.3 | 17.0 | 23.0 | 43.8 | 23.6 | 51.3 | 34.8 | 26.4 | 80.7 |
| 06-09 | Grains, alcohol, and tobacco products | 33.9 | 23.9 | 54.1 | 13.8 | 9.2 | 18.1 | 16.4 | 13.3 | 26.5 | 24.8 | 12.6 | 66.4 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 18.7 | 14.0 | 35.1 | 14.8 | 18.7 | 28.3 | 14.3 | 17.8 | 37.6 | 21.6 | 12.0 | 34.1 |
| 15-19 | Coal and petroleum products | 12.2 | 13.7 | 22.2 | 14.3 | 16.3 | 20.4 | 17.8 | 26.9 | 21.0 | 19.7 | 44.8 | 27.7 |
| 20-24 | Pharmaceutical and chemical products | 14.4 | 12.1 | 23.1 | 20.7 | 17.3 | 30.0 | 18.8 | 15.7 | 43.3 | 17.3 | 19.1 | 31.5 |
| 25-30 | Logs, wood products, and textile and leather | 11.1 | 3.0 | 12.0 | 31.3 | 7.6 | 51.9 | 11.5 | 4.0 | 12.7 | 12.4 | 8.4 | 15.9 |
| 31-34 | Base metal and machinery | 7.0 | 5.8 | 12.1 | 27.9 | 13.2 | 42.5 | 24.3 | 5.8 | 36.8 | 22.4 | 12.4 | 29.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 13.9 | 6.9 | 23.7 | 26.9 | 11.8 | 49.5 | 29.8 | 12.2 | 44.9 | 16.0 | 7.2 | 23.6 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 31.7 | 8.1 | 71.4 | 27.2 | 18.4 | 44.2 | 16.4 | 12.6 | 18.4 | 16.7 | 13.1 | 9.6 |
| -- | Commodity Unknown | 23.3 | S | S | 29.8 | S | S | 49.9 | S | S | S | 22.7 | 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.