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 | 5.8 | 7.1 | 13.5 | 14.0 | 13.0 | 27.2 | 11.7 | 14.5 | 24.8 | 16.6 | 11.2 | 16.7 | |
| 01-05 | Agriculture products and fish | 28.3 | 28.7 | 67.3 | S | 36.6 | S | S | S | S | 18.3 | 19.2 | 32.9 |
| 06-09 | Grains, alcohol, and tobacco products | 25.4 | 14.8 | 45.1 | S | 19.0 | S | S | 33.5 | S | 12.2 | 21.8 | 21.1 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 43.3 | 43.1 | 566.4 | 43.2 | 42.5 | 70.4 | 36.4 | 43.0 | 370.6 | S | 19.8 | S |
| 15-19 | Coal and petroleum products | 19.0 | 16.7 | 43.9 | 20.3 | 31.0 | 50.0 | 24.1 | 43.4 | 56.8 | 9.3 | 28.4 | 44.5 |
| 20-24 | Pharmaceutical and chemical products | 20.1 | 20.4 | 18.4 | 48.8 | 43.3 | 79.7 | 29.3 | 13.7 | 39.6 | 44.9 | 8.8 | 81.1 |
| 25-30 | Logs, wood products, and textile and leather | 9.6 | 11.4 | 14.3 | 22.1 | 13.4 | 33.7 | 15.8 | 17.5 | 29.0 | 9.4 | 5.9 | 11.3 |
| 31-34 | Base metal and machinery | 19.8 | 17.8 | 34.9 | S | 16.3 | S | 15.3 | 44.7 | 46.7 | 49.2 | 22.0 | 57.3 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 15.3 | 11.6 | 21.3 | 27.0 | 20.7 | 34.2 | 33.1 | 25.4 | 54.4 | S | 32.3 | S |
| 39-43 | Furniture, mixed freight and misc manufactured products | 19.0 | 10.2 | 113.9 | 15.0 | 29.4 | 52.8 | 22.3 | 30.1 | 40.9 | 17.5 | 15.7 | 18.3 |
| -- | Commodity Unknown | S | 36.0 | S | S | S | S | S | S | S | 39.4 | 22.4 | 2.4 |
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.