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 | 11.9 | 7.3 | 17.5 | 34.5 | 14.3 | 73.6 | 23.4 | 40.0 | 51.9 | 22.9 | 14.2 | 23.3 | |
| 01-05 | Agriculture products and fish | 20.6 | 25.2 | 27.3 | 31.8 | 32.4 | 53.0 | 39.0 | 37.2 | 74.9 | 31.4 | 32.4 | 87.9 |
| 06-09 | Grains, alcohol, and tobacco products | 20.4 | 13.4 | 32.7 | 28.7 | 19.9 | 62.1 | 19.7 | 23.8 | 135.1 | 26.6 | 16.4 | 53.2 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | S | S | S | S | S | S | S | S | S | S | S | S |
| 15-19 | Coal and petroleum products | 20.6 | 12.7 | 31.5 | 20.5 | 12.6 | 35.3 | 22.9 | S | S | S | 18.1 | S |
| 20-24 | Pharmaceutical and chemical products | 47.0 | 31.3 | 56.5 | S | S | S | S | S | S | 34.8 | 35.0 | 43.0 |
| 25-30 | Logs, wood products, and textile and leather | 14.4 | 20.1 | 16.0 | S | 45.2 | S | S | 44.2 | S | 44.2 | 20.6 | 21.7 |
| 31-34 | Base metal and machinery | 19.7 | 17.3 | 32.6 | 38.8 | S | S | 27.4 | 16.6 | 53.8 | 26.0 | 16.8 | 26.5 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 9.6 | 14.2 | 27.6 | 19.5 | 16.4 | 53.6 | 22.6 | 20.9 | 75.8 | 27.6 | 14.3 | 25.8 |
| 39-43 | Furniture, mixed freight and misc manufactured products | S | 37.2 | S | S | 30.6 | S | 44.5 | S | S | 29.3 | 18.6 | 15.7 |
| -- | Commodity Unknown | 39.0 | 48.3 | 387.6 | 44.9 | 43.2 | S | S | S | S | S | S | S |
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.