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 | 15.1 | 8.5 | 17.3 | 16.3 | 5.8 | 19.3 | 15.9 | 4.2 | 20.7 | 12.0 | 9.1 | 28.9 | |
| 01-05 | Agriculture products and fish | 15.1 | 15.3 | 15.1 | 17.2 | 25.8 | 10.1 | 25.8 | 23.4 | 18.7 | 22.2 | 25.8 | 97.1 |
| 06-09 | Grains, alcohol, and tobacco products | 9.6 | 16.9 | 16.9 | 15.7 | 16.9 | 23.9 | 17.4 | 18.8 | 27.2 | S | 25.6 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 35.9 | 38.8 | 32.9 | 40.0 | 27.5 | 106.6 | 46.6 | S | S | S | 41.3 | S |
| 15-19 | Coal and petroleum products | 21.5 | 19.1 | 41.8 | 22.6 | 22.4 | 61.9 | 15.8 | 41.6 | 68.5 | S | 35.5 | S |
| 20-24 | Pharmaceutical and chemical products | 26.0 | 11.0 | 26.8 | 39.5 | 42.1 | 44.9 | 32.6 | 14.9 | 73.4 | 23.5 | 17.0 | 72.9 |
| 25-30 | Logs, wood products, and textile and leather | 22.7 | 14.7 | 26.3 | 14.2 | 15.2 | 18.1 | 23.6 | 8.3 | 39.4 | 16.3 | 7.1 | 23.0 |
| 31-34 | Base metal and machinery | 12.3 | 7.1 | 10.1 | 33.0 | 20.5 | 48.6 | 16.6 | 13.3 | 17.6 | 18.5 | 12.7 | 28.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 34.6 | 13.1 | 46.0 | 19.3 | 13.5 | 21.9 | 20.6 | 29.2 | 24.0 | 11.9 | 11.9 | 32.2 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 8.7 | S | S | 12.7 | S | S | 13.3 | 39.3 | 46.0 | 7.7 | 12.7 | 16.4 |
| -- | Commodity Unknown | S | 32.0 | S | 44.7 | 29.3 | 5.9 | S | 44.2 | S | S | 27.8 | 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.