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 | 3.4 | 7.3 | 8.2 | 8.0 | 10.1 | 13.3 | 24.7 | 14.3 | 26.3 | 32.0 | 12.7 | 31.3 | |
| 01-05 | Agriculture products and fish | 22.6 | 18.0 | 20.0 | 26.5 | 20.6 | 29.1 | 43.1 | 27.4 | 51.5 | S | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 12.0 | 13.6 | 14.9 | 11.9 | 15.9 | 16.4 | 12.4 | 20.2 | 16.9 | 23.4 | 15.7 | 35.3 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 36.8 | 20.2 | 30.5 | 44.3 | 23.4 | 134.2 | S | 18.1 | S | S | S | S |
| 15-19 | Coal and petroleum products | 9.8 | 16.6 | 20.1 | 7.4 | 13.6 | 15.7 | 26.0 | 17.6 | 24.4 | 25.6 | 27.9 | 23.0 |
| 20-24 | Pharmaceutical and chemical products | 16.3 | 25.3 | 20.0 | 28.5 | 30.8 | 24.3 | 42.5 | 42.2 | 34.3 | 28.0 | 20.7 | 31.8 |
| 25-30 | Logs, wood products, and textile and leather | 11.4 | 10.3 | 16.8 | 18.2 | 7.1 | 22.7 | 22.0 | 7.8 | 26.1 | 10.6 | 17.6 | 30.2 |
| 31-34 | Base metal and machinery | 13.2 | 14.3 | 14.2 | 26.0 | 26.9 | 24.3 | 33.3 | 13.5 | 25.9 | S | 22.9 | S |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 11.9 | 17.0 | 25.8 | 24.7 | 20.7 | 48.8 | 13.1 | 20.5 | 22.9 | S | 26.6 | S |
| 39-43 | Furniture, mixed freight and misc manufactured products | 9.4 | 10.2 | 28.1 | 26.8 | S | S | 36.7 | S | S | 12.0 | 15.9 | 17.1 |
| -- | Commodity Unknown | S | 25.1 | S | 27.8 | S | S | S | 43.3 | S | 35.9 | 21.1 | 57.6 |
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.