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 | 20.9 | 19.7 | 37.9 | 8.9 | 21.0 | 32.4 | 23.7 | 46.5 | 53.8 | 20.5 | 17.4 | 31.8 | |
| 01-05 | Agriculture products and fish | 14.0 | 20.3 | 31.1 | 14.1 | 40.7 | 80.9 | 34.1 | S | S | 26.8 | 19.1 | 11.8 |
| 06-09 | Grains, alcohol, and tobacco products | 11.8 | 27.0 | 25.2 | 18.4 | 35.9 | 31.2 | 34.4 | 31.5 | 43.9 | 34.5 | S | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 23.1 | 18.5 | 11.6 | 37.0 | 49.8 | 48.5 | 19.1 | 17.9 | 5.9 | S | S | S |
| 15-19 | Coal and petroleum products | 9.4 | 44.7 | 63.6 | 14.6 | S | S | 14.6 | S | S | 21.8 | S | S |
| 20-24 | Pharmaceutical and chemical products | 14.2 | 13.9 | 32.2 | 33.2 | S | S | 23.9 | 21.0 | 66.2 | 23.3 | 18.6 | 12.9 |
| 25-30 | Logs, wood products, and textile and leather | 9.2 | 15.4 | 17.9 | 13.6 | 20.7 | 29.1 | 18.1 | 26.5 | 37.9 | 19.1 | 27.2 | 68.5 |
| 31-34 | Base metal and machinery | 44.7 | 14.4 | 83.4 | 46.0 | 23.4 | 77.6 | 31.2 | 18.7 | 38.7 | 33.5 | 15.4 | 50.8 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | S | 46.1 | S | 30.9 | 25.0 | 58.0 | 38.2 | 36.8 | 63.0 | 20.7 | 16.9 | 31.7 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 26.1 | 14.2 | 68.5 | S | 40.7 | S | S | 49.5 | S | 16.7 | 15.8 | 38.1 |
| -- | Commodity Unknown | 49.7 | S | S | S | S | S | S | S | S | 49.7 | 23.6 | 21.9 |
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.