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 | 8.7 | 17.1 | 23.1 | 22.1 | 33.4 | 51.4 | 10.0 | 10.1 | 14.1 | 17.6 | 26.7 | 76.3 | |
| 01-05 | Agriculture products and fish | 21.1 | 23.0 | 34.0 | 22.7 | 22.9 | 27.7 | 17.8 | 18.2 | 33.6 | 26.0 | 40.4 | 112.2 |
| 06-09 | Grains, alcohol, and tobacco products | 8.4 | 25.5 | 27.9 | 20.6 | 22.9 | 44.3 | 33.0 | 23.9 | 91.4 | 27.7 | S | S |
| 10-14 | Stones, non-metallic minerals, and metallic ores | 42.3 | S | S | 43.2 | 49.8 | 103.0 | 32.3 | 44.1 | 35.3 | 17.4 | S | S |
| 15-19 | Coal and petroleum products | 33.1 | S | S | 30.5 | S | S | 29.5 | S | S | 28.3 | 31.3 | 7.2 |
| 20-24 | Pharmaceutical and chemical products | 22.1 | 45.2 | 65.3 | 24.1 | 34.7 | 35.5 | 26.2 | 17.1 | 27.2 | 25.1 | 16.7 | 24.2 |
| 25-30 | Logs, wood products, and textile and leather | 26.9 | 24.9 | 24.8 | 25.4 | 23.1 | 25.1 | S | 26.0 | S | 15.9 | 17.7 | 43.3 |
| 31-34 | Base metal and machinery | 10.9 | 27.1 | 29.9 | S | S | S | 30.6 | 39.3 | 70.1 | 20.9 | 32.9 | 34.3 |
| 35-38 | Electronic, motorized vehicles, and precision instruments | 26.1 | 38.9 | 57.1 | 17.7 | 36.0 | 52.6 | 37.1 | S | S | 17.2 | S | S |
| 39-43 | Furniture, mixed freight and misc manufactured products | 28.1 | 42.1 | 109.4 | 21.2 | 38.7 | 40.6 | 26.5 | 41.7 | 32.5 | 16.7 | 21.9 | 17.3 |
| -- | Commodity Unknown | 44.7 | S | S | 37.1 | S | S | S | S | S | S | 42.7 | 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.