Table B-10a. Estimated Coefficients of Variation for Shipment Characteristics by NAICS (1) for the United States: 2012
(Estimates are based on data from the 2012 Commodity Flow Survey)
| NAICS code | NAICS title | Value | Tons | Ton-miles (2) | Average miles per shipment |
|---|---|---|---|---|---|
| coefficient of variation of number | coefficient of variation of number | coefficient of variation of number | coefficient of variation of number | ||
| Total | 1.1 | 1.8 | 3.7 | 3.4 | |
| 212 | Mining (except oil and gas) | 3.1 | 2.6 | 9.7 | 3 |
| 31–33 | Manufacturing | 0.7 | 1.6 | 1.1 | 2 |
| 311 | Food manufacturing | 2.4 | 4.3 | 4.6 | 10.8 |
| 312 | Beverage and tobacco product manufacturing | 7 | 2.7 | 4.3 | 14.4 |
| 313 | Textile mills | 4.9 | 4.4 | 6 | 3.8 |
| 314 | Textile product mills | 9.1 | 18.9 | 19.1 | 4.7 |
| 315 | Apparel manufacturing | 18.1 | 17.1 | 36.7 | 4.5 |
| 316 | Leather and allied product manufacturing | 5.6 | 10.2 | 13.1 | 3.8 |
| 321 | Wood product manufacturing | 5.3 | 10.3 | 5.8 | 4.8 |
| 322 | Paper manufacturing | 2.4 | 4.4 | 3.9 | 5.7 |
| 323 | Printing and related support activities | 2.5 | 7.5 | 10 | 5.8 |
| 324 | Petroleum and coal products manufacturing | 4.3 | 4.1 | 10.2 | 10.9 |
| 325 | Chemical manufacturing | 2.1 | 3.8 | 5.6 | 3.7 |
| 326 | Plastics and rubber products manufacturing | 2.6 | 4.9 | 3.8 | 4.3 |
| 327 | Nonmetallic mineral product manufacturing | 2.2 | 2.6 | 4.9 | 5.9 |
| 331 | Primary metal manufacturing | 1.8 | 6.9 | 3.8 | 7.5 |
| 332 | Fabricated metal product manufacturing | 2.1 | 4.4 | 4.2 | 3.9 |
| 333 | Machinery manufacturing | 2.8 | 4.7 | 5.1 | 2 |
| 334 | Computer and electronic product manufacturing | 4.1 | 14.5 | 9.1 | 2.4 |
| 335 | Electrical equipment, appliance, and component manufacturing | 3.7 | 6.3 | 5.7 | 1.6 |
| 336 | Transportation equipment manufacturing | 3.8 | 6 | 5.9 | 4.1 |
| 337 | Furniture and related product manufacturing | 3.6 | 3.5 | 5.7 | 4.4 |
| 339 | Miscellaneous manufacturing | 2.6 | 14.7 | 10.2 | 2.5 |
| 42 | Wholesale trade | 1.5 | 3.6 | 5.1 | 2.9 |
| 423 | Merchant wholesalers, durable goods | 1.2 | 7.1 | 8.2 | 4.1 |
| 4231 | Motor vehicle and motor vehicle parts and supplies merchant wholesalers | 4.1 | 6.8 | 15.2 | 8.3 |
| 4232 | Furniture and home furnishing merchant wholesalers | 4.7 | 15 | 27.4 | 6 |
| 4233 | Lumber and other construction materials merchant wholesalers | 3 | 16.7 | 15.1 | 8.6 |
| 4234 | Professional and commercial equipment and supplies merchant wholesalers | 2.1 | 6.6 | 9.8 | 6 |
| 4235 | Metal and mineral (except petroleum) merchant wholesalers | 3.5 | 7.1 | 24.3 | 7.9 |
| 4236 | Electrical and electronic goods merchant wholesalers | 4.8 | 6.9 | 5.6 | 6.3 |
| 4237 | Hardware, plumbing and heating equipment and supplies merchant wholesalers | 3.4 | 2.6 | 7.4 | 7.1 |
| 4238 | Machinery, equipment, and supplies merchant wholesalers | 2 | 8.9 | 6.9 | 5.6 |
| 4239 | Miscellaneous durable goods merchant wholesalers | 4.6 | 8.1 | 6.8 | 5.1 |
| 424 | Merchant wholesalers, nondurable goods | 2.1 | 3.8 | 7.7 | 5.4 |
| 4241 | Paper and paper product merchant wholesalers | 3.3 | 4.6 | 10.4 | 10.1 |
| 4242 | Drugs and druggists’ sundries merchant wholesalers | 5.4 | 9.2 | 16 | 6.7 |
| 4243 | Apparel, piece goods, and notions merchant wholesalers | 6.5 | 14.9 | 19.3 | 6.5 |
| 4244 | Grocery and related product merchant wholesalers | 2.3 | 5.2 | 5.2 | 9.5 |
| 4245 | Farm product raw material merchant wholesalers | 5.8 | 7.6 | 14.3 | 22.1 |
| 4246 | Chemical and allied products merchant wholesalers | 7.5 | 8.7 | 14.2 | 10.9 |
| 4247 | Petroleum and petroleum products merchant wholesalers | 3.5 | 5.6 | 15.7 | 8.6 |
| 4248 | Beer, wine, and distilled alcoholic beverage merchant wholesalers | 3.5 | 4.4 | 7.7 | 8.1 |
| 4249 | Miscellaneous nondurable goods merchant wholesalers | 3.5 | 12.1 | 11.3 | 6.7 |
| 4541 | Electronic shopping and mail-order houses | 5.1 | 12.6 | 7.7 | 2.4 |
| 45431 | Fuel dealers | 2.5 | 2.5 | 7.1 | 1.8 |
| 4931 (3) | Warehousing and storage | 3.5 | 7.8 | 4.3 | 4.5 |
| 5111 | Newspaper, periodical, book, and directory publishers | 7.1 | 15.9 | 22.3 | S |
| 551114 | Corporate, subsidiary, and regional managing offices | 11.2 | 14.8 | 40.6 | 7.7 |
KEY: S = Withheld because estimate did not meet publication standards.
(1) NAICS codes shown are those covered in the Commodity Flow Survey.
(2) Ton-miles estimates are based on estimated distances traveled along a modeled transportation network. See “Mileage Calculations” section for additional information.
(3) For tabulation and publication purposes, NAICS 484 is grouped with NAICS 4931.
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: U.S. Department of Transportation, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2012 Economic Census: Transportation Commodity Flow Survey, December 2014.