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 | 9.2 | 5.8 | 13.4 | 14.7 | 10.6 | 19.5 | S | 18.3 | S | 46.8 | 20.3 | 65.6 | |
| 01-05 | Agriculture products and fish | 35.5 | 14.0 | 29.6 | S | 25.4 | S | S | S | S | 47.0 | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 13.5 | 11.1 | 14.8 | 19.1 | 15.9 | 19.8 | 34.3 | 36.6 | 45.9 | S | 35.5 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 13.5 | 24.2 | 29.6 | 12.6 | 26.0 | 27.8 | 38.5 | 26.2 | 256.8 | S | 34.2 | S |
| 15-19 | Coal and petroleum products | 28.1 | 18.9 | 34.2 | 23.1 | 17.3 | 28.5 | 35.4 | 35.8 | 77.4 | S | 25.5 | S |
| 20-24 | Pharmaceutical and chemical products | 20.1 | 12.2 | 35.7 | 19.6 | 15.6 | 32.3 | 39.1 | 28.8 | 52.8 | 36.8 | S | S |
| 25-30 | Logs, wood products, and textile and leather | 12.5 | 9.8 | 17.6 | 19.2 | 17.2 | 19.3 | 27.4 | 14.5 | 59.1 | 29.3 | 38.1 | 360.2 |
| 31-34 | Base metal and machinery | 12.1 | 13.8 | 21.8 | 7.3 | 20.0 | 27.8 | 40.4 | 32.0 | 191.4 | 34.3 | 22.6 | 147.2 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 39.9 | 16.2 | 76.1 | 45.9 | 26.3 | 107.7 | S | 25.9 | S | 26.5 | 31.7 | 25.4 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 34.3 | 8.0 | 110.4 | 47.5 | 28.4 | 316.2 | S | S | S | 30.6 | 37.4 | 41.1 |
| -- | Commodity Unknown | S | 43.9 | S | S | S | S | 44.5 | S | S | S | 35.0 | 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.