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 | 7.3 | 6.7 | 10.5 | 9.6 | 8.1 | 10.6 | 19.6 | 14.8 | 17.2 | 8.2 | 14.7 | 9.7 | |
| 01-05 | Agriculture products and fish | 15.0 | 10.4 | 18.5 | 20.9 | 12.4 | 21.3 | 24.9 | 20.7 | 19.3 | 28.7 | 23.3 | 39.7 |
| 06-09 | Grains, alcohol, and tobacco products | 17.6 | 7.1 | 12.5 | 37.1 | 14.3 | 42.2 | S | 18.0 | S | 30.8 | 18.4 | 70.3 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 16.2 | 26.0 | 20.7 | 23.8 | 22.4 | 31.1 | 29.3 | 31.5 | 34.4 | S | 30.9 | S |
| 15-19 | Coal and petroleum products | 38.1 | 21.2 | 39.0 | 48.6 | 22.2 | 42.0 | 49.6 | 49.8 | 39.7 | 39.5 | 33.1 | 85.3 |
| 20-24 | Pharmaceutical and chemical products | 18.8 | 17.2 | 47.0 | 28.1 | 42.5 | 73.9 | 36.0 | 19.5 | 62.9 | 13.6 | 19.7 | 11.3 |
| 25-30 | Logs, wood products, and textile and leather | 26.6 | 35.9 | 26.9 | 22.9 | 31.2 | 33.7 | 44.7 | 31.4 | 114.5 | 18.3 | 13.6 | 16.9 |
| 31-34 | Base metal and machinery | 12.1 | 15.6 | 23.7 | 24.5 | 48.1 | 20.4 | 24.4 | S | S | 23.3 | 17.0 | 11.5 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 11.2 | 11.1 | 21.0 | 13.2 | 8.5 | 21.7 | 21.6 | 6.8 | 28.4 | 13.3 | 13.1 | 14.1 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 14.2 | 13.5 | 16.1 | S | 17.9 | S | S | 19.7 | S | 12.4 | 15.0 | 14.7 |
| -- | Commodity Unknown | S | 33.1 | S | S | S | S | S | 46.8 | S | S | 28.3 | 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.