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 | 13.8 | 5.4 | 20.2 | 10.3 | 6.5 | 13.8 | 6.4 | 6.4 | 10.3 | 14.3 | 8.1 | 15.3 | |
| 01-05 | Agriculture products and fish | 14.0 | 11.0 | 22.6 | 34.3 | 13.7 | 38.3 | 13.4 | 20.0 | 14.3 | S | 16.3 | S |
| 06-09 | Grains, alcohol, and tobacco products | 21.1 | 14.2 | 33.7 | 43.5 | 14.7 | 86.7 | 35.1 | 15.3 | 64.0 | 18.3 | 47.9 | 67.9 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 17.5 | 16.9 | 28.0 | 14.4 | 19.6 | 21.8 | 10.6 | 22.9 | 27.7 | 26.4 | 25.7 | 44.5 |
| 15-19 | Coal and petroleum products | 22.3 | 14.6 | 32.1 | 14.6 | 15.2 | 26.3 | 17.1 | 27.2 | 38.3 | 34.1 | 28.3 | 42.2 |
| 20-24 | Pharmaceutical and chemical products | 16.7 | 9.9 | 29.0 | 28.7 | 24.4 | 47.1 | 19.5 | 17.8 | 32.2 | 35.8 | 11.7 | 27.4 |
| 25-30 | Logs, wood products, and textile and leather | 11.4 | 12.1 | 16.5 | 14.9 | 13.0 | 16.3 | 27.4 | 14.3 | 24.3 | 18.5 | 10.7 | 19.0 |
| 31-34 | Base metal and machinery | 11.7 | 5.6 | 14.5 | 44.5 | 12.7 | 69.6 | 23.9 | 16.2 | 34.5 | 17.5 | 13.9 | 21.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 39.0 | 20.6 | 75.2 | 34.6 | 16.9 | 98.4 | S | 25.8 | S | 22.0 | 13.3 | 25.7 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 13.5 | 9.8 | 26.1 | 43.6 | 17.2 | 62.8 | 19.3 | 12.5 | 27.7 | 18.5 | 8.9 | 17.0 |
| -- | Commodity Unknown | 26.8 | 37.1 | 12.7 | 44.3 | S | S | S | S | S | 23.9 | 20.7 | 19.3 |
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.