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 | 5.9 | 4.3 | 7.7 | 13.6 | 3.9 | 15.0 | 39.2 | 8.9 | 76.1 | 15.7 | 16.5 | 28.1 | |
| 01-05 | Agriculture products and fish | 25.6 | 11.2 | 21.3 | 29.8 | 9.5 | 34.8 | S | 17.0 | S | 22.8 | 24.4 | 85.5 |
| 06-09 | Grains, alcohol, and tobacco products | 25.6 | 15.5 | 29.5 | 29.9 | 6.7 | 37.1 | 25.6 | 11.6 | 29.2 | 21.4 | 7.9 | 92.7 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 27.6 | S | S | 26.2 | 20.9 | 34.5 | S | 40.2 | S | 20.5 | 38.6 | 47.7 |
| 15-19 | Coal and petroleum products | 28.7 | 19.2 | 33.3 | 26.6 | 22.7 | 27.6 | 44.2 | 21.5 | 93.9 | S | 25.9 | S |
| 20-24 | Pharmaceutical and chemical products | 15.2 | 14.6 | 29.0 | 25.7 | 12.7 | 74.7 | 26.7 | 16.9 | 69.4 | 21.3 | 15.3 | 41.7 |
| 25-30 | Logs, wood products, and textile and leather | 27.3 | 4.8 | 34.2 | 36.4 | 13.1 | 55.7 | 41.2 | 15.5 | 78.6 | 12.5 | 15.1 | 21.3 |
| 31-34 | Base metal and machinery | 8.7 | 10.8 | 15.5 | 15.4 | 10.4 | 11.9 | 13.5 | 7.4 | 16.7 | 21.1 | 18.2 | 34.8 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 14.2 | 14.4 | 20.5 | 23.5 | 11.7 | 26.0 | 25.6 | 14.8 | 33.7 | 9.1 | 22.0 | 37.7 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 11.7 | 22.8 | 39.0 | 7.0 | 25.1 | 19.6 | 10.7 | 13.0 | 15.9 | 41.7 | 9.5 | 23.9 |
| -- | Commodity Unknown | 40.1 | 43.5 | 20.8 | 40.1 | S | S | S | S | S | 27.0 | 33.0 | 164.4 |
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.