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 | 11.2 | 5.7 | 24.4 | 20.3 | 12.0 | 42.7 | 21.9 | 19.1 | 49.3 | 7.3 | 13.3 | 12.5 | |
| 01-05 | Agriculture products and fish | 26.4 | 34.6 | 53.3 | 37.6 | 25.3 | 71.1 | S | S | S | S | 21.4 | S |
| 06-09 | Grains, alcohol, and tobacco products | 10.8 | 15.8 | 27.2 | 11.6 | 16.6 | 24.5 | 25.0 | 17.1 | 41.1 | 40.3 | 22.5 | 105.2 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 24.7 | 33.3 | 19.2 | 30.8 | 23.7 | 156.0 | 21.2 | 23.4 | 64.5 | S | S | S |
| 15-19 | Coal and petroleum products | S | 13.2 | S | S | 15.7 | S | S | 16.9 | S | S | 22.3 | S |
| 20-24 | Pharmaceutical and chemical products | 28.7 | 24.7 | 125.3 | 19.6 | 31.5 | 108.4 | 18.8 | 39.5 | 76.1 | 14.7 | 15.4 | 9.7 |
| 25-30 | Logs, wood products, and textile and leather | 23.7 | 19.0 | 80.4 | S | 21.6 | S | S | 24.8 | S | 10.8 | 10.3 | 15.1 |
| 31-34 | Base metal and machinery | 13.8 | 7.3 | 24.9 | 26.4 | 18.9 | 34.4 | 46.5 | 42.0 | 83.1 | 19.0 | 18.0 | 37.8 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 22.0 | 11.2 | 73.2 | 12.1 | 14.2 | 31.2 | 20.3 | 18.5 | 75.9 | 12.3 | 27.9 | 59.3 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 24.4 | 14.7 | 37.7 | 34.5 | 27.7 | 80.1 | S | 33.7 | S | 28.5 | 14.4 | 18.2 |
| -- | Commodity Unknown | 20.8 | S | S | 46.7 | S | S | S | 48.3 | S | 27.0 | 28.3 | 71.7 |
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.