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 | 14.5 | 5.3 | 22.4 | 13.4 | 13.7 | 21.8 | 19.1 | 28.8 | 34.7 | 9.6 | 8.3 | 20.1 | |
| 01-05 | Agriculture products and fish | S | 20.1 | S | S | 38.5 | S | S | 45.8 | S | S | 37.9 | S |
| 06-09 | Grains, alcohol, and tobacco products | 20.0 | 20.8 | 62.2 | 12.2 | 24.8 | 58.5 | 16.7 | 42.9 | 145.0 | 23.7 | 34.0 | 90.9 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 22.9 | 27.3 | 20.9 | 28.2 | 41.4 | 19.5 | S | 33.5 | S | 48.8 | 31.4 | 535.1 |
| 15-19 | Coal and petroleum products | 17.6 | 14.3 | 41.4 | 15.7 | 24.9 | 44.2 | 11.2 | 39.8 | 22.3 | 13.9 | 23.0 | 29.7 |
| 20-24 | Pharmaceutical and chemical products | 15.1 | 8.8 | 22.3 | 42.8 | 18.8 | 100.6 | 36.1 | 27.7 | 79.5 | 21.2 | 16.5 | 18.9 |
| 25-30 | Logs, wood products, and textile and leather | 22.7 | 8.1 | 34.5 | 19.4 | 17.2 | 27.6 | 44.1 | 11.4 | 122.3 | 11.8 | 5.8 | 17.1 |
| 31-34 | Base metal and machinery | 12.3 | 7.7 | 17.4 | 25.0 | 10.8 | 30.3 | 40.8 | 9.1 | 159.4 | 18.7 | 11.1 | 43.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | S | 20.0 | S | S | 22.8 | S | 37.2 | 26.7 | 81.7 | 11.6 | 12.4 | 32.9 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 9.4 | 8.3 | 28.3 | 15.8 | S | S | 21.3 | S | S | 13.4 | 11.4 | 17.8 |
| -- | Commodity Unknown | S | S | S | S | 42.9 | S | S | S | S | 17.8 | 28.2 | 45.7 |
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.