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 | 3.9 | 4.8 | 7.2 | 6.5 | 6.2 | 11.3 | 17.8 | 10.9 | 23.8 | 11.8 | 17.0 | 21.7 | |
| 01-05 | Agriculture products and fish | 21.0 | 20.6 | 43.5 | 22.2 | 23.8 | 74.9 | 31.3 | 14.9 | 82.7 | S | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 7.6 | 11.1 | 11.9 | 16.5 | 19.8 | 24.0 | 30.3 | 25.9 | 48.7 | 37.2 | 42.8 | 41.7 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 34.7 | 25.8 | 40.0 | 35.2 | 32.9 | 44.4 | 33.4 | S | S | 45.6 | 39.8 | 94.2 |
| 15-19 | Coal and petroleum products | 8.6 | 5.5 | 14.0 | 8.7 | 8.9 | 16.7 | 9.3 | 21.4 | 34.6 | S | S | S |
| 20-24 | Pharmaceutical and chemical products | 13.2 | 7.2 | 17.0 | 21.7 | 12.6 | 24.8 | 40.8 | 9.5 | 53.3 | 18.4 | 13.1 | 39.6 |
| 25-30 | Logs, wood products, and textile and leather | 14.3 | 20.3 | 18.7 | 12.1 | 38.0 | 19.9 | 6.5 | 37.7 | 23.0 | 32.9 | 10.9 | 11.5 |
| 31-34 | Base metal and machinery | 7.8 | 8.0 | 11.6 | S | 42.1 | S | 13.2 | 34.2 | 22.8 | 19.8 | 22.4 | 23.7 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 31.0 | 24.1 | 44.2 | 35.6 | 17.6 | 56.2 | S | 32.4 | S | 47.2 | 28.9 | 67.6 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 12.8 | 14.6 | 34.9 | 24.8 | 24.2 | 35.0 | 41.8 | 17.7 | 45.0 | 21.8 | 23.9 | 35.0 |
| -- | Commodity Unknown | 14.5 | 46.1 | 15.6 | 23.4 | S | S | S | S | S | S | S | 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.