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 | 8.8 | 6.4 | 10.9 | 17.3 | 13.2 | 22.8 | 8.4 | 21.6 | 10.4 | 14.4 | 7.6 | 35.8 | |
| 01-05 | Agriculture products and fish | 27.7 | 36.0 | 53.0 | 43.3 | S | S | 46.2 | S | S | 27.7 | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 16.5 | 13.3 | 18.6 | 20.1 | 16.1 | 23.3 | 26.7 | 24.5 | 23.0 | S | 23.0 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 24.3 | 19.5 | 24.3 | 7.1 | 18.6 | 20.3 | 22.3 | 23.6 | 25.7 | 13.1 | S | S |
| 15-19 | Coal and petroleum products | 23.7 | 12.5 | 32.0 | 26.6 | 10.2 | 18.7 | 27.5 | 18.6 | 36.2 | 24.2 | 18.7 | 131.5 |
| 20-24 | Pharmaceutical and chemical products | 38.9 | 16.7 | 64.8 | 27.6 | 10.0 | 53.2 | 9.6 | 17.3 | 10.2 | 21.4 | 9.5 | 20.4 |
| 25-30 | Logs, wood products, and textile and leather | 9.8 | 9.8 | 18.4 | 8.0 | 14.6 | 21.8 | 15.3 | 19.6 | 35.1 | 11.2 | 8.2 | 22.9 |
| 31-34 | Base metal and machinery | 11.4 | 14.4 | 14.7 | 44.1 | 17.1 | 88.7 | 14.1 | 29.1 | 12.8 | 22.5 | 13.9 | 22.1 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 11.8 | 9.2 | 9.6 | 19.4 | 15.2 | 14.2 | 13.3 | 14.3 | 16.3 | 13.9 | 12.4 | 26.2 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 29.6 | 21.3 | 54.6 | 40.0 | 41.0 | 34.6 | 27.3 | 36.4 | 7.7 | 15.9 | 10.4 | 33.5 |
| -- | Commodity Unknown | 39.1 | 43.4 | 7.5 | 45.8 | 43.1 | 32.8 | S | 34.2 | S | 38.5 | 24.6 | 33.2 |
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.