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 | 6.1 | 8.3 | 10.5 | 21.2 | 24.3 | 31.5 | 15.7 | 23.7 | 25.0 | 4.5 | 10.6 | 15.6 | |
| 01-05 | Agriculture products and fish | 29.9 | S | S | 29.9 | S | S | 31.7 | 43.5 | 85.6 | S | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 11.8 | 32.3 | 36.9 | 12.0 | 34.8 | 32.5 | 40.6 | 42.9 | 74.6 | 32.9 | 42.5 | 45.4 |
| 10-14 | Stones, non-metallic minerals, and metallic ores | S | 35.9 | S | S | S | S | 49.9 | 39.2 | 43.8 | 18.7 | 37.8 | 17.0 |
| 15-19 | Coal and petroleum products | 26.5 | 42.0 | 177.1 | 30.7 | 39.4 | 140.4 | S | 46.3 | S | 30.2 | 36.8 | 985.1 |
| 20-24 | Pharmaceutical and chemical products | 13.2 | 19.9 | 29.6 | 18.8 | 46.0 | 2.0 | 11.8 | S | S | 21.3 | S | S |
| 25-30 | Logs, wood products, and textile and leather | 8.7 | 14.4 | 20.2 | 23.7 | 17.6 | 58.1 | 17.1 | 17.5 | 26.4 | 6.8 | 9.9 | 13.7 |
| 31-34 | Base metal and machinery | 11.2 | 16.9 | 17.6 | 43.4 | 48.2 | 98.7 | 38.3 | 41.3 | 67.5 | 17.6 | 23.6 | 37.3 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 14.4 | 16.8 | 15.2 | 31.2 | 11.4 | 74.3 | S | 19.7 | S | 6.6 | 18.6 | 30.5 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 21.4 | 12.4 | 62.1 | 27.9 | 30.1 | 67.9 | 23.0 | 36.7 | 61.4 | 13.9 | 12.7 | 16.8 |
| -- | Commodity Unknown | S | S | S | S | S | S | S | S | S | S | 27.6 | 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.