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 | 9.9 | 16.8 | 22.0 | 10.6 | 12.5 | 13.7 | 13.9 | 8.3 | 23.6 | 15.9 | 19.3 | 18.3 | |
| 01-05 | Agriculture products and fish | 32.3 | 17.2 | 56.2 | 31.3 | 13.7 | 54.5 | 30.1 | 26.8 | 78.1 | 37.3 | S | S |
| 06-09 | Grains, alcohol, and tobacco products | 15.0 | 12.6 | 27.0 | 25.2 | 9.3 | 38.6 | 31.3 | 11.1 | 48.0 | S | 32.9 | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 26.2 | 25.0 | 18.3 | S | 39.0 | S | 33.3 | 20.6 | 28.8 | S | S | S |
| 15-19 | Coal and petroleum products | 15.8 | 40.9 | 73.6 | 15.3 | 36.9 | 60.4 | 43.8 | 31.6 | 173.2 | 31.3 | S | S |
| 20-24 | Pharmaceutical and chemical products | 23.3 | 13.0 | 16.3 | 29.0 | 20.8 | 19.9 | 21.8 | 21.5 | 20.6 | 25.5 | 14.2 | 101.7 |
| 25-30 | Logs, wood products, and textile and leather | 31.9 | 14.7 | 45.1 | 16.9 | 8.5 | 28.1 | 19.4 | 9.4 | 27.9 | 17.5 | 14.6 | 13.2 |
| 31-34 | Base metal and machinery | 12.4 | 15.2 | 14.1 | 40.1 | 19.3 | 7.8 | S | 22.3 | S | 33.4 | 24.5 | 29.5 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 26.0 | S | S | 31.4 | 21.2 | 30.2 | 27.6 | 49.2 | 48.9 | 16.5 | 24.6 | 42.8 |
| 39-43 | Furniture, mixed freight and misc manufactured products | 14.4 | 21.2 | 43.0 | 37.4 | 26.3 | 117.9 | 32.9 | 35.9 | 133.6 | 31.9 | 17.9 | 14.8 |
| -- | Commodity Unknown | 45.4 | 47.3 | 8.4 | S | S | S | S | S | S | S | 32.3 | 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.