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 | 6.1 | 15.0 | 10.5 | 12.5 | 14.2 | 5.7 | 9.8 | 13.8 | 15.4 | 5.2 | 25.2 | |
| 01-05 | Agriculture products and fish | 22.4 | 4.8 | 23.9 | 27.7 | 15.9 | 14.1 | 24.4 | 16.2 | 26.2 | 39.6 | 26.4 | 108.6 |
| 06-09 | Grains, alcohol, and tobacco products | 26.3 | 36.4 | 26.8 | 29.1 | 34.3 | 30.8 | 30.1 | 18.8 | 28.6 | 16.0 | 23.1 | 72.0 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 47.7 | 16.7 | 55.2 | 20.7 | 34.8 | 37.0 | 15.6 | 19.8 | 38.8 | S | S | S |
| 15-19 | Coal and petroleum products | 39.2 | 17.3 | 33.1 | 42.8 | 17.1 | 26.7 | S | 15.7 | S | 21.1 | 13.3 | 71.5 |
| 20-24 | Pharmaceutical and chemical products | 8.7 | 8.9 | 11.2 | 16.8 | 11.5 | 15.9 | 14.9 | 18.0 | 22.8 | 38.1 | 17.7 | 31.5 |
| 25-30 | Logs, wood products, and textile and leather | 35.8 | 4.9 | 48.4 | 35.0 | 8.9 | 50.9 | 23.8 | 8.0 | 28.4 | 13.1 | 7.7 | 16.5 |
| 31-34 | Base metal and machinery | 7.6 | 18.9 | 20.3 | 17.0 | 37.6 | 31.1 | 15.9 | 29.9 | 40.6 | 23.1 | 14.7 | 22.6 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 34.6 | 7.8 | 100.3 | 48.0 | 12.6 | 154.5 | S | 14.0 | S | 13.0 | 24.2 | 64.2 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 15.2 | 29.9 | 86.1 | 12.6 | 34.5 | 61.7 | 18.8 | 25.0 | 47.7 | 13.6 | 10.1 | 16.2 |
| -- | Commodity Unknown | 42.0 | S | S | S | S | S | 39.0 | S | S | 29.9 | 30.6 | 115.1 |
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.