Table B-5a. Estimated Measures of Reliability for Shipment Characteristics by Two-Digit Commodity for the United States: 2002
Monday, July 2, 2012
Table B-5a. Estimated Measures of Reliability for Shipment Characteristics by Two-Digit Commodity for the United States: 2002
[Estimates are based on data from the 2002 Commodity Flow Survey]
| SCTG code | Commodity description (2-digit) | Value | Tons | Ton-miles | CV of average miles per shipment | |||
|---|---|---|---|---|---|---|---|---|
| CV | Std. error of percent | CV | Std. error of percent | CV | Std. error of percent | |||
| Total | 1.3 | – | 2.0 | – | 3.7 | – | 2.9 | |
| 01 | Live animals and live fish | 21.1 | – | 24.5 | – | 26.0 | – | 18.3 |
| 02 | Cereal grains | 7.1 | – | 7.5 | 0.4 | 18.1 | 1.3 | 10.9 |
| 03 | Other agricultural products | 10.4 | 0.2 | 7.8 | 0.2 | 7.4 | 0.3 | 12.2 |
| 04 | Animal feed and products of animal origin, n.e.c. | 9.6 | - | 14.1 | 0.3 | 10.0 | 0.2 | 24.8 |
| 05 | Meat, fish, seafood, and their preparations | 4.2 | 0.1 | 4.6 | – | 6.5 | 0.1 | 15.2 |
| 06 |
Milled grain products and
preparations, and bakery products |
8.2 | 0.1 | 7.2 | – | 6.8 | 0.1 | 19.1 |
| 07 | Other prepared foodstuffs and fats and oils | 4.4 | 0.2 | 5.2 | 0.2 | 6.3 | 0.4 | 17.7 |
| 08 | Alcoholic beverages | 6.1 | – | 5.8 | – | 12.8 | 0.1 | 4.7 |
| 09 | Tobacco products | 14.4 | 0.1 | 29.9 | – | 36.3 | – | 22.1 |
| 10 | Monumental or building stone | 29.1 | – | 29.9 | – | 22.1 | – | 16.9 |
| 11 | Natural sands | 6.8 | – | 9.1 | 0.4 | 11.8 | 0.1 | 10.5 |
| 12 | Gravel and crushed stone | 6.7 | – | 9.0 | 1.2 | 10.5 | 0.3 | 7.6 |
| 13 | Nonmetallic minerals n.e.c. | 11.5 | – | 11.9 | 0.2 | 18.7 | 0.3 | 15.9 |
| 14 | Metallic ores and concentrates | 14.0 | – | 12.4 | 0.1 | 18.1 | 0.3 | 7.9 |
| 15 | Coal | 8.0 | – | 8.8 | 0.8 | 16.8 | 2.4 | 8.4 |
| 17 | Gasoline and aviation turbine fuel | 4.4 | 0.2 | 5.0 | 0.5 | 9.8 | 0.4 | 10.1 |
| 18 | Fuel oils | 6.0 | – | 6.0 | 0.3 | 10.1 | 0.2 | 13.5 |
| 19 | Coal and petroleum products, n.e.c. | 7.5 | – | 10.2 | 0.4 | 11.1 | 0.3 | 24.7 |
| 20 | Basic chemicals | 7.7 | 0.1 | 12.6 | 0.4 | 10.8 | 0.4 | 15.3 |
| 21 | Pharmaceutical products | 9.5 | 0.5 | 16.7 | – | 21.0 | – | 5.7 |
| 22 | Fertilizers | 16.9 | - | 30.2 | 0.7 | 24.7 | 0.7 | 28.4 |
| 23 | Chemical products and preparations, n.e.c. | 5.0 | 0.1 | 5.1 | – | 7.9 | 0.1 | 7.2 |
| 24 | Plastics and rubber | 3.6 | 0.1 | 4.0 | – | 5.2 | 0.2 | 6.1 |
| 25 | Logs and other wood in the rough | 24.2 | – | S | S | 34.4 | – | S |
| 26 | Wood products | 8.4 | 0.2 | 9.2 | 0.2 | 11.7 | 0.5 | 10.5 |
| 27 | Pulp, newsprint, paper, and paperboard | 5.2 | – | 6.2 | – | 7.4 | 0.2 | 10.4 |
| 28 | Paper or paperboard articles | 4.0 | – | 5.2 | – | 8.5 | – | 9.5 |
| 29 | Printed products | 7.6 | 0.1 | 8.1 | – | 8.5 | – | 3.9 |
| 30 | Textiles, leather, and articles of textiles or leather | 5.4 | 0.3 | 7.5 | – | 10.5 | 0.1 | 2.4 |
| 31 | Nonmetallic mineral products | 7.0 | 0.1 | 9.0 | 0.7 | 11.9 | 0.5 | 9.5 |
| 32 |
Base metal in primary or
semifinished forms and in finished basic shapes |
5.0 | 0.2 | 6.3 | 0.2 | 6.0 | 0.3 | 10.2 |
| 33 | Articles of base metal | 3.9 | 0.1 | 9.5 | – | 7.0 | 0.1 | 5.6 |
| 34 | Machinery | 5.7 | 0.3 | 7.7 | – | 9.0 | 0.1 | 6.6 |
| 35 |
Electronic and other
electrical equipment and components and office equipment |
5.6 | 0.5 | 9.7 | – | 11.9 | 0.1 | 4.9 |
| 36 | Motorized and other vehicles (including parts) | 8.3 | 0.6 | 7.6 | – | 10.1 | 0.2 | 12.3 |
| 37 | Transportation equipment, n.e.c. | 23.3 | 0.4 | 40.9 | – | 41.7 | 0.2 | 5.0 |
| 38 | Precision instruments and apparatus | 7.9 | 0.2 | 18.3 | – | 12.6 | – | 8.0 |
| 39 |
Furniture, mattresses and
mattress supports, lamps, lighting fittings, and... |
6.2 | 0.1 | 11.8 | – | 6.4 | – | 6.2 |
| 40 | Miscellaneous manufactured products | 5.4 | 0.2 | 10.5 | – | 7.7 | – | 4.3 |
| 41 | Waste and scrap | 14.4 | – | 16.8 | 0.3 | 25.8 | 0.4 | 10.5 |
| 43 | Mixed freight | 3.6 | 0.4 | 5.6 | 0.1 | 5.0 | 0.1 | 7.9 |
| -- | Commodity unknown | 9.9 | – | 22.3 | – | 41.7 | 0.1 | 8.8 |
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.
NOTES: The Introduction and appendixes give information on 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, United States Data, December 2004.