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 | 8.3 | 6.6 | 14.9 | 10.4 | 7.9 | 17.2 | 11.0 | 2.4 | 16.7 | 9.4 | 5.0 | 12.7 | |
| 01-05 | Agriculture products and fish | 21.3 | 14.5 | 31.1 | S | 15.0 | S | 34.9 | 18.5 | 62.6 | 20.4 | 25.3 | 74.7 |
| 06-09 | Grains, alcohol, and tobacco products | 28.2 | 11.6 | 62.8 | 26.5 | 8.9 | 39.4 | 19.8 | 20.8 | 46.3 | 28.6 | 40.6 | 45.7 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | S | 25.3 | S | 22.0 | 22.4 | 21.2 | 25.4 | 18.1 | 21.4 | 22.1 | 43.3 | 74.6 |
| 15-19 | Coal and petroleum products | 46.2 | 18.8 | 62.4 | 44.4 | 21.0 | 69.9 | S | 13.9 | S | S | 16.0 | S |
| 20-24 | Pharmaceutical and chemical products | 9.0 | 7.7 | 16.9 | 20.0 | 10.2 | 31.5 | 17.4 | 11.1 | 34.7 | 12.3 | 11.8 | 23.3 |
| 25-30 | Logs, wood products, and textile and leather | 21.5 | 10.0 | 34.0 | 26.8 | 9.3 | 36.5 | 32.4 | 5.6 | 48.2 | 6.2 | 6.0 | 9.3 |
| 31-34 | Base metal and machinery | 11.0 | 6.5 | 12.7 | 29.9 | 17.0 | 55.2 | 13.6 | 15.2 | 29.4 | 15.2 | 11.2 | 24.8 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 14.3 | 10.8 | 26.4 | 13.7 | 10.0 | 28.3 | 12.5 | 9.9 | 27.9 | 15.7 | 7.7 | 26.3 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 31.3 | 39.8 | 81.2 | 38.3 | 15.0 | 143.8 | 26.2 | 17.1 | 53.0 | 29.6 | 11.9 | 15.4 |
| -- | Commodity Unknown | 47.4 | 27.1 | 15.9 | 44.1 | S | S | S | 34.6 | S | 24.3 | 22.3 | 27.4 |
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.