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 | 19.6 | 10.5 | 26.8 | 23.8 | 9.4 | 33.1 | 9.2 | 5.8 | 10.2 | 12.0 | 16.4 | 14.6 | |
| 01-05 | Agriculture products and fish | 19.0 | 7.6 | 15.0 | 29.4 | 22.4 | 27.3 | 30.6 | 15.6 | 24.2 | S | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 17.3 | 8.1 | 19.1 | 21.4 | 8.7 | 24.4 | 30.0 | 11.7 | 31.7 | 29.6 | 11.6 | 50.2 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 38.5 | 31.5 | 138.4 | S | 25.6 | S | 48.4 | 25.1 | 217.7 | S | 18.3 | S |
| 15-19 | Coal and petroleum products | 14.5 | 15.4 | 30.7 | 14.4 | 16.4 | 30.3 | 17.2 | 28.8 | 28.6 | 48.4 | 39.5 | 66.0 |
| 20-24 | Pharmaceutical and chemical products | 12.8 | 8.2 | 12.3 | 35.9 | 12.3 | 20.3 | 21.6 | 18.0 | 6.7 | 27.7 | 17.0 | 84.9 |
| 25-30 | Logs, wood products, and textile and leather | 7.9 | 7.7 | 10.5 | 17.3 | 9.0 | 23.5 | 22.9 | 11.0 | 29.9 | 18.7 | 10.4 | 19.0 |
| 31-34 | Base metal and machinery | 22.5 | 4.0 | 21.9 | 21.4 | 10.3 | 8.1 | 18.8 | 9.4 | 12.4 | 19.0 | 20.9 | 28.3 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 43.6 | 27.3 | 66.8 | 14.9 | 11.0 | 22.8 | 22.0 | 22.5 | 29.3 | 37.9 | 20.3 | 37.0 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 25.4 | 18.9 | 67.2 | 23.3 | 28.4 | 45.1 | 22.1 | 12.6 | 42.6 | 17.7 | 15.8 | 12.2 |
| -- | Commodity Unknown | 44.8 | 41.0 | 18.7 | 40.7 | S | S | S | 47.2 | S | 40.7 | 40.5 | 71.9 |
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.