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 | 9.0 | 6.0 | 10.0 | 12.2 | 10.2 | 12.6 | 16.9 | 13.7 | 14.6 | 13.0 | 13.8 | 6.5 | |
| 01-05 | Agriculture products and fish | 42.4 | 37.1 | 24.7 | S | 29.1 | S | S | S | S | S | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 15.4 | 20.2 | 38.6 | 27.1 | 25.5 | 67.0 | 16.9 | 41.8 | 82.5 | 27.7 | 43.6 | 39.3 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 17.8 | 43.9 | 21.5 | 25.7 | 47.0 | 56.6 | 37.1 | S | S | 49.2 | 27.4 | 49.1 |
| 15-19 | Coal and petroleum products | 26.8 | 16.4 | 33.7 | 17.9 | 17.7 | 20.8 | 29.4 | 12.8 | 17.2 | 39.3 | 15.6 | 17.6 |
| 20-24 | Pharmaceutical and chemical products | 20.8 | 23.4 | 13.3 | 30.5 | 28.0 | 14.0 | 34.7 | 36.2 | 25.2 | 32.7 | 19.7 | 8.6 |
| 25-30 | Logs, wood products, and textile and leather | 21.1 | 9.9 | 22.8 | 15.5 | 26.0 | 15.6 | 26.1 | 35.4 | 18.3 | 18.4 | 19.1 | 10.1 |
| 31-34 | Base metal and machinery | 19.1 | 7.2 | 18.8 | 33.0 | 15.4 | 24.1 | 24.7 | 19.1 | 33.7 | 25.8 | 23.1 | 50.8 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 16.8 | 24.3 | 21.1 | 45.3 | 15.5 | 77.9 | 39.6 | 24.5 | 89.8 | 37.8 | 20.2 | 39.5 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 21.7 | 20.6 | 55.4 | 33.1 | 27.9 | 249.7 | 42.6 | 38.0 | 200.8 | 19.5 | 15.9 | 23.7 |
| -- | Commodity Unknown | 37.6 | 31.7 | 30.9 | S | 35.3 | S | S | S | S | 36.8 | 36.5 | 40.2 |
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.