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 | 9.5 | 10.3 | 18.5 | 15.2 | 19.3 | 35.9 | 21.5 | 22.1 | 47.0 | 20.3 | S | S | |
| 01-05 | Agriculture products and fish | 43.2 | 34.9 | 114.7 | 48.7 | S | S | 48.0 | 43.2 | 50.6 | S | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 19.4 | 31.1 | 40.4 | 19.2 | 37.2 | 40.3 | 25.7 | 25.5 | 19.0 | S | S | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 40.5 | 28.5 | 41.4 | 39.6 | 22.1 | 60.1 | 46.3 | 22.1 | 61.1 | 40.0 | 43.2 | 52.8 |
| 15-19 | Coal and petroleum products | 11.5 | 7.9 | 22.4 | 16.4 | 21.1 | 39.9 | 22.4 | 24.0 | 52.0 | 28.9 | 23.0 | 28.8 |
| 20-24 | Pharmaceutical and chemical products | 25.9 | 23.5 | 33.1 | 32.2 | 17.3 | 33.7 | 33.7 | 16.0 | 21.1 | 30.3 | S | S |
| 25-30 | Logs, wood products, and textile and leather | 27.5 | S | S | 48.4 | 34.2 | 67.5 | 48.0 | 21.0 | 70.3 | 20.7 | S | S |
| 31-34 | Base metal and machinery | 19.5 | 30.7 | 57.8 | 29.7 | 37.8 | 95.9 | 12.7 | 30.4 | 23.1 | 43.6 | 47.5 | 82.6 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | S | 47.6 | S | 18.9 | 45.3 | 248.4 | 34.1 | S | S | 23.3 | 30.4 | 68.8 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 15.9 | 37.1 | 55.9 | S | 41.9 | S | S | 35.5 | S | 17.8 | 35.7 | 56.9 |
| -- | Commodity Unknown | 38.1 | S | S | S | S | S | S | S | S | 46.5 | 30.0 | 22.1 |
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.