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 | 10.2 | 8.8 | 17.4 | 17.1 | 10.5 | 16.7 | 13.7 | 13.8 | 18.1 | 13.9 | 13.1 | 15.5 | |
| 01-05 | Agriculture products and fish | 25.4 | 37.8 | 27.8 | 24.5 | S | S | 42.2 | S | S | S | 30.7 | S |
| 06-09 | Grains, alcohol, and tobacco products | 11.1 | 13.4 | 16.5 | 18.0 | 22.8 | 26.5 | 24.7 | 15.3 | 34.3 | S | 26.6 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 34.6 | 18.7 | 30.0 | S | 27.5 | S | 45.0 | 28.8 | 48.7 | S | 25.8 | S |
| 15-19 | Coal and petroleum products | 10.8 | 26.1 | 33.0 | 22.0 | 9.6 | 32.5 | 17.6 | 13.6 | 27.0 | 38.7 | 11.5 | 23.8 |
| 20-24 | Pharmaceutical and chemical products | 25.7 | 18.5 | 34.5 | 29.9 | 23.0 | 23.6 | 36.6 | 49.4 | 41.3 | 18.5 | 21.6 | 56.0 |
| 25-30 | Logs, wood products, and textile and leather | 17.4 | 11.3 | 21.8 | 27.3 | 10.8 | 43.2 | 39.9 | 19.4 | 79.3 | 22.4 | 18.3 | 17.7 |
| 31-34 | Base metal and machinery | 13.2 | 7.4 | 16.5 | 14.4 | 17.2 | 12.1 | 11.9 | 26.3 | 17.8 | 19.1 | 12.8 | 21.6 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 17.4 | 18.9 | 25.8 | 30.1 | 34.3 | 48.5 | 22.0 | S | S | 10.6 | 10.8 | 16.1 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 34.2 | 18.1 | 152.1 | S | 12.9 | S | S | 19.4 | S | 34.7 | 20.0 | 24.3 |
| -- | Commodity Unknown | 42.0 | 20.1 | 18.1 | 26.0 | S | S | 37.1 | S | S | 49.5 | 27.9 | 26.1 |
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.