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 | 6.1 | 3.7 | 7.9 | 21.7 | 9.1 | 28.5 | 8.0 | 12.0 | 18.4 | 11.9 | 7.2 | 12.2 | |
| 01-05 | Agriculture products and fish | 18.0 | 6.0 | 18.6 | 17.4 | 8.6 | 18.3 | 18.2 | 16.1 | 33.7 | S | 14.2 | S |
| 06-09 | Grains, alcohol, and tobacco products | 32.1 | 7.7 | 43.8 | 42.6 | 7.3 | 60.3 | S | 10.9 | S | 39.7 | 26.4 | 34.0 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 16.1 | 15.4 | 22.2 | 9.2 | 20.7 | 23.6 | 10.9 | 24.9 | 33.5 | 38.3 | 31.7 | 162.8 |
| 15-19 | Coal and petroleum products | 33.9 | 31.9 | 37.0 | 31.4 | 33.3 | 27.3 | 37.6 | S | S | 43.6 | 30.5 | 31.5 |
| 20-24 | Pharmaceutical and chemical products | 16.0 | 6.0 | 24.8 | 17.6 | 25.1 | 11.0 | 25.8 | 49.3 | 17.0 | 21.2 | 12.1 | 20.6 |
| 25-30 | Logs, wood products, and textile and leather | 7.6 | 7.9 | 9.5 | 6.2 | 8.9 | 9.9 | 6.2 | 14.8 | 14.5 | 9.9 | 12.6 | 20.3 |
| 31-34 | Base metal and machinery | 12.3 | 6.2 | 17.3 | S | 13.8 | S | 44.4 | 32.8 | 117.3 | 24.7 | 9.3 | 15.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 8.4 | 11.8 | 11.8 | 12.9 | 12.2 | 10.4 | 10.2 | 23.2 | 13.1 | 5.5 | 5.8 | 9.0 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 10.8 | 4.4 | 19.1 | 24.7 | 31.0 | 28.2 | 41.4 | 44.9 | 35.2 | 9.9 | 6.4 | 7.7 |
| -- | Commodity Unknown | 30.2 | 25.2 | 10.4 | S | 28.7 | S | S | 40.0 | S | 24.5 | 30.4 | 81.6 |
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.