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 | 6.9 | 8.6 | 13.8 | 8.1 | 10.6 | 13.4 | 12.4 | 34.2 | 26.9 | 15.1 | 13.6 | 26.3 | |
| 01-05 | Agriculture products and fish | 19.5 | 18.3 | 21.5 | 24.9 | 23.9 | 26.4 | 20.4 | 43.0 | 28.6 | 11.8 | 30.9 | 29.3 |
| 06-09 | Grains, alcohol, and tobacco products | 10.6 | 12.2 | 21.6 | 15.7 | 13.8 | 39.2 | 18.3 | 13.1 | 44.1 | 22.0 | 19.3 | 23.3 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 37.7 | 49.9 | 36.1 | 40.9 | S | S | 41.4 | S | S | S | 42.4 | S |
| 15-19 | Coal and petroleum products | 13.7 | 20.6 | 30.5 | 14.3 | 20.7 | 27.2 | 19.5 | 25.1 | 25.1 | 16.5 | 22.0 | 19.9 |
| 20-24 | Pharmaceutical and chemical products | 16.3 | 19.9 | 42.2 | 44.1 | 30.7 | 77.4 | 36.0 | 33.5 | 88.8 | 21.3 | 34.9 | 230.1 |
| 25-30 | Logs, wood products, and textile and leather | 19.1 | 45.2 | 54.0 | 25.7 | 15.3 | 47.3 | 18.8 | 25.8 | 51.2 | 15.4 | 21.0 | 37.5 |
| 31-34 | Base metal and machinery | 19.4 | 7.9 | 50.9 | 28.2 | 40.2 | 58.0 | 27.1 | 13.0 | 89.0 | S | 26.3 | S |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 20.6 | 21.4 | 51.1 | 22.4 | 36.9 | 67.4 | 34.3 | S | S | 20.1 | 20.0 | 24.6 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 12.5 | 18.7 | 20.0 | 24.2 | 44.1 | 26.4 | S | 21.2 | S | 26.2 | 28.5 | 38.4 |
| -- | Commodity Unknown | S | S | S | S | S | S | 47.9 | S | S | S | 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.