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 | 13.6 | 14.6 | 19.5 | 8.2 | 11.8 | 15.3 | 12.8 | 12.6 | 21.5 | 7.4 | 10.0 | 12.0 | |
| 01-05 | Agriculture products and fish | 34.9 | 17.6 | 46.6 | 29.4 | 27.0 | 88.6 | 43.4 | 30.2 | 146.3 | S | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 10.2 | 11.1 | 18.0 | 19.5 | 16.2 | 27.8 | 22.7 | 7.8 | 33.7 | S | 22.3 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | S | 16.2 | S | 19.5 | 27.9 | 25.3 | 45.1 | 35.1 | 84.7 | 24.7 | 19.6 | 22.0 |
| 15-19 | Coal and petroleum products | 14.8 | 21.0 | 42.0 | 20.9 | 21.8 | 38.9 | 20.3 | S | S | S | S | S |
| 20-24 | Pharmaceutical and chemical products | 42.3 | 10.3 | 59.1 | 20.5 | 14.3 | 28.3 | 35.7 | 20.3 | 85.6 | 7.0 | 11.2 | 14.1 |
| 25-30 | Logs, wood products, and textile and leather | 16.3 | S | S | 20.9 | 21.5 | 18.2 | 27.0 | 21.6 | 20.3 | 13.5 | 12.9 | 19.1 |
| 31-34 | Base metal and machinery | 13.4 | 20.7 | 14.1 | 42.6 | 24.4 | 59.3 | 21.8 | 14.8 | 20.5 | 11.4 | 12.1 | 16.8 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 12.2 | 8.3 | 14.0 | 15.4 | 9.7 | 15.2 | 16.6 | 15.4 | 16.7 | 13.9 | 10.0 | 17.5 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 9.2 | 13.7 | 30.1 | 16.1 | 21.8 | 48.0 | 22.0 | 24.9 | 40.8 | 12.4 | 14.7 | 21.9 |
| -- | Commodity Unknown | 46.1 | S | S | S | 49.4 | S | 45.1 | S | S | S | 31.7 | 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.