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 | 6.5 | 5.2 | 14.7 | 11.0 | 6.4 | 16.6 | 15.7 | 4.5 | 22.4 | 7.1 | 6.4 | 14.1 | |
| 01-05 | Agriculture products and fish | 23.5 | 14.7 | 40.9 | S | 24.4 | S | 38.2 | 30.4 | 56.1 | 39.0 | 24.9 | 50.2 |
| 06-09 | Grains, alcohol, and tobacco products | 12.8 | 7.4 | 16.4 | 14.6 | 9.5 | 17.5 | 10.9 | 17.2 | 22.6 | 16.8 | 12.2 | 69.7 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 14.1 | 17.1 | 17.1 | 15.5 | 14.6 | 17.9 | 28.4 | 16.6 | 18.2 | 42.9 | 34.6 | 34.3 |
| 15-19 | Coal and petroleum products | 21.9 | 10.2 | 65.7 | 29.8 | 10.9 | 67.7 | 28.0 | 34.9 | 123.7 | 11.5 | 40.3 | 45.0 |
| 20-24 | Pharmaceutical and chemical products | 22.4 | 4.9 | 81.2 | 48.6 | 10.7 | 97.6 | 45.3 | 7.3 | 114.0 | 21.7 | 12.8 | 30.1 |
| 25-30 | Logs, wood products, and textile and leather | 9.9 | 12.3 | 14.8 | 11.7 | 6.7 | 15.3 | 12.1 | 11.8 | 15.6 | 7.7 | 5.5 | 11.9 |
| 31-34 | Base metal and machinery | 9.4 | 10.6 | 16.0 | 28.7 | 25.0 | 45.2 | 6.8 | 9.0 | 10.9 | 13.4 | 9.7 | 26.5 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 9.6 | 15.6 | 33.2 | 20.9 | 16.4 | 54.0 | 22.8 | 10.5 | 53.7 | 9.7 | 11.9 | 26.2 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 10.1 | 4.8 | 27.7 | 26.2 | 16.2 | 69.0 | 37.4 | 12.4 | 110.2 | 9.1 | 12.5 | 19.1 |
| -- | Commodity Unknown | 47.5 | S | S | S | S | S | S | S | S | 21.9 | 35.9 | 111.1 |
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.