Table B-5b. Estimated Standard Errors for Shipment Characteristics by Two-Digit Commodity for the United States: Percent of Total for 2002 and 1997
Monday, July 2, 2012
Table B-5b. Estimated Standard Errors for Shipment Characteristics by Two-Digit Commodity for the United States: Percent of Total for 2002 and 1997
[Estimates are based on data from the 2002 and 1997 Commodity Flow Surveys]
| SCTG code | Commodity description (2-digit) | Value | Tons | Ton-miles | |||
|---|---|---|---|---|---|---|---|
| 2002 | 1997 | 2002 | 1997 | 2002 | 1997 | ||
| Total | – | – | – | – | – | – | |
| 01 | Live animals and live fish | – | – | – | – | – | – |
| 02 | Cereal grains | – | – | 0.4 | 0.2 | 1.3 | 0.6 |
| 03 | Other agricultural products | 0.2 | – | 0.2 | – | 0.3 | 0.2 |
| 04 | Animal feed and products of animal origin, n.e.c. | – | – | 0.3 | – | 0.2 | – |
| 05 | Meat, fish, seafood, and their preparations | 0.1 | 0.1 | – | – | 0.1 | – |
| 06 | Milled grain products and
preparations, and bakery products |
0.1 | – | – | – | 0.1 | 0.1 |
| 07 | Other prepared foodstuffs and fats and oils | 0.2 | 0.1 | 0.2 | 0.1 | 0.4 | 0.2 |
| 08 | Alcoholic beverages | – | – | – | – | 0.1 | 0.1 |
| 09 | Tobacco products | 0.1 | – | – | – | – | – |
| 10 | Monumental or building stone | – | – | – | – | – | – |
| 11 | Natural sands | – | – | 0.4 | 0.4 | 0.1 | – |
| 12 | Gravel and crushed stone | – | – | 1.2 | 0.6 | 0.3 | 0.2 |
| 13 | Nonmetallic minerals n.e.c. | – | – | 0.2 | 0.3 | 0.3 | 0.3 |
| 14 | Metallic ores and concentrates | – | – | 0.1 | 0.1 | 0.3 | 0.4 |
| 15 | Coal | – | – | 0.8 | 0.5 | 2.4 | 1.6 |
| 17 | Gasoline and aviation turbine fuel | 0.2 | 0.2 | 0.5 | 0.4 | 0.4 | 0.6 |
| 18 | Fuel oils | – | – | 0.3 | 0.3 | 0.2 | 0.2 |
| 19 | Coal and petroleum products, n.e.c. | – | – | 0.4 | 0.3 | 0.3 | 0.4 |
| 20 | Basic chemicals | 0.1 | 0.3 | 0.4 | 0.2 | 0.4 | 0.7 |
| 21 | Pharmaceutical products | 0.5 | 0.2 | – | – | – | – |
| 22 | Fertilizers | – | – | 0.7 | 0.1 | 0.7 | 0.1 |
| 23 | Chemical products and preparations, n.e.c. | 0.1 | 0.1 | – | – | 0.1 | 0.1 |
| 24 | Plastics and rubber | 0.1 | 0.1 | – | – | 0.2 | 0.2 |
| 25 | Logs and other wood in the rough | – | – | S | – | – | 0.1 |
| 26 | Wood products | 0.2 | – | 0.2 | 0.2 | 0.5 | 0.3 |
| 27 | Pulp, newsprint, paper, and paperboard | – | – | – | – | 0.2 | 0.1 |
| 28 | Paper or paperboard articles | – | – | – | – | – | – |
| 29 | Printed products | 0.1 | 0.6 | – | – | – | 0.1 |
| 30 | Textiles, leather, and articles of textiles or leather | 0.3 | 0.4 | – | – | 0.1 | – |
| 31 | Nonmetallic mineral products | 0.1 | – | 0.7 | 0.8 | 0.5 | 0.2 |
| 32 |
Base metal in primary or
semifinished forms and in finished basic shapes |
0.2 | 0.1 | 0.2 | 0.2 | 0.3 | 0.2 |
| 33 | Articles of base metal | 0.1 | 0.1 | – | – | 0.1 | 0.2 |
| 34 | Machinery | 0.3 | 0.1 | – | – | 0.1 | – |
| 35 |
Electronic and other
electrical equipment and components and office equipment |
0.5 | 0.4 | – | – | 0.1 | – |
| 36 | Motorized and other vehicles (including parts) | 0.6 | 0.3 | – | – | 0.2 | – |
| 37 | Transportation equipment, n.e.c. | 0.4 | 0.3 | – | – | 0.2 | – |
| 38 | Precision instruments and apparatus | 0.2 | 0.1 | – | – | – | – |
| 39 |
Furniture, mattresses and
mattress supports, lamps, lighting fittings, and... |
0.1 | – | – | – | – | – |
| 40 | Miscellaneous manufactured products | 0.2 | 0.4 | – | 0.2 | – | 0.1 |
| 41 | Waste and scrap | – | – | 0.3 | 0.1 | 0.4 | 0.1 |
| 43 | Mixed freight | 0.4 | 0.3 | 0.1 | 0.1 | 0.1 | 0.1 |
| -- | Commodity unknown | – | – | – | – | 0.1 | – |
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.
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.