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 | 18.9 | 5.2 | 28.4 | 11.5 | 9.0 | 12.2 | 28.1 | 21.0 | 37.9 | 8.9 | 8.3 | 14.5 | |
| 01-05 | Agriculture products and fish | 18.1 | 15.3 | 27.4 | 31.1 | 37.8 | 30.2 | 31.7 | 25.5 | 35.6 | 22.3 | 33.3 | 54.3 |
| 06-09 | Grains, alcohol, and tobacco products | 11.1 | 12.3 | 14.7 | 14.6 | 18.0 | 17.0 | 31.2 | 15.3 | 38.0 | 33.9 | 26.8 | 113.3 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 41.2 | 23.1 | 43.9 | 11.5 | 18.8 | 15.8 | 39.9 | 20.6 | 55.8 | 22.3 | 37.8 | 26.7 |
| 15-19 | Coal and petroleum products | 35.3 | 21.1 | 59.6 | 47.8 | 11.6 | 46.8 | 42.8 | 44.9 | 28.3 | S | 27.5 | S |
| 20-24 | Pharmaceutical and chemical products | 19.2 | 20.3 | 31.2 | 21.1 | 12.4 | 36.7 | 22.7 | 12.4 | 38.7 | 22.1 | 22.7 | 28.7 |
| 25-30 | Logs, wood products, and textile and leather | 27.4 | 10.0 | 53.0 | 32.8 | 8.4 | 52.9 | S | 12.6 | S | 11.9 | 19.3 | 30.8 |
| 31-34 | Base metal and machinery | 13.8 | 8.8 | 16.7 | 35.2 | 21.8 | 13.8 | 21.0 | S | S | 10.5 | 20.5 | 45.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 48.5 | 11.5 | 77.5 | 16.8 | 22.8 | 17.7 | 31.9 | 15.6 | 31.9 | 17.0 | 18.3 | 31.4 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 8.6 | 9.5 | 26.4 | 18.1 | 27.0 | 83.4 | 20.0 | 15.3 | 49.9 | 12.5 | 8.7 | 13.5 |
| -- | Commodity Unknown | S | 37.0 | S | S | 48.7 | S | 39.5 | 46.0 | 8.2 | 34.3 | S | S |
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.