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 | 13.4 | 10.9 | 24.0 | 25.3 | 10.6 | 36.6 | 10.5 | 7.7 | 19.3 | 19.8 | 15.9 | 26.7 | |
| 01-05 | Agriculture products and fish | S | 17.2 | S | S | 17.6 | S | S | 43.1 | S | S | 30.1 | S |
| 06-09 | Grains, alcohol, and tobacco products | 12.3 | 7.2 | 14.3 | 13.9 | 9.3 | 16.0 | 23.4 | 15.3 | 36.7 | 24.8 | 16.2 | 47.1 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 48.2 | 20.8 | 89.3 | S | 25.6 | S | 30.5 | 25.8 | 63.7 | 21.5 | S | S |
| 15-19 | Coal and petroleum products | 26.1 | 15.5 | 7.6 | 37.1 | 23.5 | 21.8 | 40.4 | 25.0 | 18.4 | 33.0 | 13.9 | 40.0 |
| 20-24 | Pharmaceutical and chemical products | 22.8 | 12.1 | 38.9 | 32.2 | 13.8 | 60.8 | 20.9 | 18.0 | 39.2 | 32.9 | 10.5 | 35.9 |
| 25-30 | Logs, wood products, and textile and leather | 42.9 | 11.8 | 122.9 | 42.5 | 16.0 | 85.7 | 14.7 | 10.5 | 25.1 | 18.3 | 12.9 | 13.9 |
| 31-34 | Base metal and machinery | 12.6 | 11.1 | 21.4 | 26.1 | 15.1 | 24.7 | 34.0 | 14.3 | 83.5 | 26.1 | 17.5 | 23.8 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 16.2 | 18.1 | 20.0 | 12.4 | 29.4 | 22.9 | 20.3 | 40.8 | 20.5 | 17.1 | 33.8 | 87.7 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 20.8 | 34.4 | 40.9 | 42.0 | 36.8 | 47.5 | S | 18.9 | S | 25.8 | 24.8 | 37.2 |
| -- | Commodity Unknown | 35.6 | S | S | 31.4 | 47.9 | 25.7 | 47.8 | S | S | 30.4 | 42.3 | 296.9 |
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.