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 | 16.2 | 4.6 | 25.4 | 9.4 | 13.9 | 15.6 | 14.7 | 15.9 | 21.3 | 9.0 | 11.8 | 33.0 | |
| 01-05 | Agriculture products and fish | 20.2 | 21.1 | 23.0 | 37.1 | 18.3 | 28.4 | 48.0 | 28.4 | 53.7 | 39.4 | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 10.0 | 18.6 | 13.5 | 13.0 | 12.2 | 16.5 | 15.1 | 20.8 | 22.7 | 33.3 | 16.2 | 92.4 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 16.7 | 25.6 | 22.3 | 14.5 | 32.0 | 27.6 | 38.2 | 28.8 | 30.9 | 29.2 | 36.6 | 67.9 |
| 15-19 | Coal and petroleum products | 19.3 | 10.3 | 26.4 | 16.3 | 16.0 | 20.7 | 23.5 | 23.3 | 29.7 | 37.7 | 21.1 | 20.3 |
| 20-24 | Pharmaceutical and chemical products | 16.3 | 11.6 | 38.9 | 18.4 | 9.1 | 34.1 | 19.2 | 10.5 | 34.9 | 13.5 | 6.5 | 26.6 |
| 25-30 | Logs, wood products, and textile and leather | 25.0 | 6.2 | 45.9 | 19.7 | 13.8 | 31.8 | 17.0 | 7.1 | 31.7 | 8.8 | 13.6 | 37.3 |
| 31-34 | Base metal and machinery | 48.4 | 5.9 | 136.7 | 24.2 | 13.3 | 31.9 | 35.4 | 7.3 | 66.6 | 11.9 | 9.2 | 20.7 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 26.4 | 9.2 | 29.7 | 23.5 | 11.4 | 32.9 | 17.8 | 14.6 | 20.7 | 10.8 | 16.9 | 40.3 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 17.8 | 11.5 | 56.3 | 17.7 | 21.3 | 38.2 | 17.2 | 30.7 | 43.0 | 12.7 | 11.3 | 26.3 |
| -- | Commodity Unknown | 32.7 | 39.9 | 105.4 | S | 32.8 | S | 33.9 | S | S | S | 29.0 | 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.