Table B-5a. Estimated Measures of Reliability for Shipment Characteristics by Two-Digit Commodity for State of Origin: 2002

Table B-5a. Estimated Measures of Reliability for Shipment Characteristics by Two-Digit Commodity for State of Origin: 2002

[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]

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Commodity (2-digit SCTG) 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
All Commodities 3.9 6.5 17.8 11.8
01 Live animals and live fish
02 Cereal grains 23.6 1.5 24.3 3.9 31.3 0.8 S
03 Other agricultural products 32.6 1.6 34.4 2.3 43.0 0.5 22.7
04 Animal feed and products of animal origin, n.e.c. S S 49.8 1.1 S S S
05 Meat, fish, seafood, and their preparations 35.1 0.2 30.4 36.6 S
06 Milled grain products and preparations, and bakery products 33.4 S S S S S
07 Other prepared foodstuffs and fats and oils 13.3 0.4 21.5 0.3 33.9 0.6 S
08 Alcoholic beverages 18.2 0.2 23.3 18.9 10.9
09 Tobacco products 39.3 0.2 49.7 S S 26.2
10 Monumental or building stone S S S S S S 31.6
11 Natural sands 35.6 S S 45.9 0.5 S
12 Gravel and crushed stone S S 37.4 0.8 42.7 0.4 30.6
13 Nonmetallic minerals n.e.c. 46.8 39.2 0.2 S S 44.4
14 Metallic ores and concentrates S S S S S S S
15 Coal S S S S S S 27.9
17 Gasoline and aviation turbine fuel 11.9 1.8 11.9 2.7 20.2 4.5 25.5
18 Fuel oils 18.6 1.8 16.5 2.7 27.0 3.6 S
19 Coal and petroleum products, n.e.c. 14.4 0.7 16.9 1.2 33.3 3.1 S
20 Basic chemicals 13.4 1.9 12.2 1.4 10.2 1.9 21.8
21 Pharmaceutical products S S S S S S S
22 Fertilizers 31.4 0.5 S S S S 45.8
23 Chemical products and preparations, n.e.c. 18.7 0.8 19.5 26.9 0.5 37.5
24 Plastics and rubber 12.5 0.7 16.1 0.2 17.7 0.8 31.3
25 Logs and other wood in the rough S S S S 45.5 46.3
26 Wood products 37.6 0.9 18.5 0.4 11.8 0.6 S
27 Pulp, newsprint, paper, and paperboard 7.8 0.3 7.4 0.1 7.7 0.6 9.6
28 Paper or paperboard articles 47.0 0.2 40.9 S S 21.1
29 Printed products 27.9 34.6 43.0 41.5
30 Textiles, leather, and articles of textiles or leather S S 44.7 41.1 16.1
31 Nonmetallic mineral products 33.0 0.2 S S 23.3 0.1 S
32 Base metal in primary or semi finished forms and in finished basic shapes 21.0 0.2 26.7 0.1 26.4 0.1 S
33 Articles of base metal 21.8 0.6 25.3 0.1 41.5 0.3 33.9
34 Machinery 15.6 0.3 21.4 19.3 26.7
35 Electronic and other electrical equipment and components and office equipment 28.2 0.5 33.8 16.2 47.7
36 Motorized and other vehicles (including parts) S S S S S S S
37 Transportation equipment, n.e.c. S S S S S S 31.4
38 Precision instruments and apparatus 30.5 0.3 37.4 S S 16.5
39 Furniture, mattresses and mattress supports, lamps, lighting fittings, and... 33.1 0.1 33.2 28.5 43.8
40 Miscellaneous manufactured products 24.5 0.6 27.3 25.0 20.2
41 Waste and scrap S S S S S S S
43 Mixed freight 21.2 0.6 27.3 35.7 38.5
-- Commodity unknown 14.5 23.4 S S 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

NOTES: The Introduction and appendixes give information on confidentially protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/cfs. Coverage for the 2002 Commodity Flow Survey (CFS) differs from the previous surveys due to a change from the 1987 Standard Industrial Classification System to the 1997 North American Industry Classification System and other survey improvements. Therefore, data users are urged to use caution when comparing 2002 CFS estimates with estimates from prior years.

SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Individual State Data, December 2004.