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 | 2.0 | 5.0 | 10.5 | 13.3 | 18.1 | 3.1 | 3.7 | 5.6 | 8.2 | 6.1 | 10.3 | |
| 01-05 | Agriculture products and fish | 18.5 | 4.1 | 14.0 | 14.8 | 9.5 | 15.0 | 3.9 | 5.6 | 6.7 | 26.3 | 18.5 | 25.9 |
| 06-09 | Grains, alcohol, and tobacco products | 13.7 | 5.2 | 14.8 | 11.6 | 7.5 | 16.1 | 9.2 | 10.7 | 15.1 | 42.5 | 23.1 | 22.3 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 38.5 | 23.2 | 63.8 | 46.2 | 27.2 | 71.7 | 33.3 | 20.9 | 67.2 | 38.1 | 30.4 | 26.7 |
| 15-19 | Coal and petroleum products | 20.5 | 14.3 | 34.2 | 14.5 | 12.0 | 17.0 | 31.5 | 11.2 | 24.2 | 25.9 | 11.2 | 27.7 |
| 20-24 | Pharmaceutical and chemical products | 20.6 | 6.4 | 25.6 | 27.9 | 8.1 | 38.7 | 34.6 | 7.3 | 79.8 | 17.9 | 5.6 | 13.6 |
| 25-30 | Logs, wood products, and textile and leather | 11.6 | 6.6 | 13.7 | 20.4 | 21.3 | 29.8 | 21.3 | 12.1 | 24.2 | 11.0 | 7.3 | 12.4 |
| 31-34 | Base metal and machinery | 12.7 | 3.6 | 13.3 | 27.8 | S | S | 13.2 | 12.7 | 18.5 | 10.1 | 8.8 | 11.3 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 12.4 | 7.5 | 16.2 | 45.3 | 8.8 | 87.3 | S | 12.4 | S | 5.9 | 8.0 | 14.6 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 15.0 | 8.6 | 49.3 | 37.6 | 15.0 | 135.2 | 18.8 | 20.8 | 60.3 | 10.5 | 6.2 | 9.9 |
| -- | Commodity Unknown | 23.7 | 26.4 | 10.9 | S | 48.2 | S | S | 28.4 | S | 26.4 | 20.6 | 29.2 |
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.