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 | 14.5 | 7.5 | 22.8 | 14.2 | 48.2 | 43.4 | 38.1 | 16.9 | 78.2 | 10.0 | 11.4 | 20.4 | |
| 01-05 | Agriculture products and fish | 27.1 | 50.0 | 76.2 | 45.9 | S | S | 37.6 | S | S | 37.6 | 25.3 | 264.5 |
| 06-09 | Grains, alcohol, and tobacco products | 23.3 | 34.1 | 39.9 | 38.6 | 36.2 | 122.5 | S | S | S | S | 32.1 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 21.1 | S | S | 18.1 | S | S | 27.9 | S | S | 21.3 | 31.8 | 82.9 |
| 15-19 | Coal and petroleum products | 25.7 | 19.7 | 65.2 | 24.3 | 20.1 | 72.5 | 30.3 | 29.0 | 100.4 | 36.0 | 20.3 | 48.2 |
| 20-24 | Pharmaceutical and chemical products | 15.3 | 21.6 | 31.6 | 36.9 | 28.0 | 70.3 | 27.8 | 30.1 | 54.4 | 18.0 | 35.9 | 53.3 |
| 25-30 | Logs, wood products, and textile and leather | 11.8 | 13.7 | 19.8 | 33.5 | 24.3 | 40.9 | 19.7 | 18.8 | 27.4 | 9.1 | 13.6 | 14.5 |
| 31-34 | Base metal and machinery | S | 14.7 | S | 45.4 | 24.3 | 142.8 | S | S | S | 18.8 | 27.4 | 58.7 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 16.1 | 13.5 | 27.9 | 28.3 | 20.0 | 46.7 | 26.4 | 26.0 | 29.7 | 9.8 | S | S |
| 39-43 | Furniture, mixed freight and misc manufactured products | 10.0 | 13.9 | 26.4 | 26.5 | S | S | 16.0 | 30.3 | 55.1 | 6.0 | 11.5 | 12.3 |
| -- | Commodity Unknown | S | S | S | S | S | S | 46.2 | S | S | 21.8 | 44.9 | 150.6 |
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.