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 5.2 9.1 14.0 9.5
01 Live animals and live fish S S S S S S 31.6
02 Cereal grains 40.3 0.5 42.8 3.9 42.7 5.7 S
03 Other agricultural products S S S S S S 27.5
04 Animal feed and products of animal origin, n.e.c. S S S S S S S
05 Meat, fish, seafood, and their preparations 31.3 1.0 21.6 0.3 37.5 0.7 41.1
06 Milled grain products and preparations, and bakery products 22.1 0.2 33.5 0.4 S S 25.3
07 Other prepared foodstuffs and fats and oils 12.0 1.1 20.2 1.5 25.6 2.5 28.6
08 Alcoholic beverages 28.4 0.3 23.8 0.3 32.9 0.2 18.7
09 Tobacco products S S S S S S 24.5
10 Monumental or building stone S S S S S S 26.1
11 Natural sands 27.0 30.2 0.7 35.1 0.7 S
12 Gravel and crushed stone 14.8 12.7 3.2 33.9 5.1 S
13 Nonmetallic minerals n.e.c. S S S S S S 35.8
14 Metallic ores and concentrates S S S S S S 31.6
15 Coal
17 Gasoline and aviation turbine fuel 40.2 0.3 45.1 1.0 S S 29.6
18 Fuel oils 16.5 19.1 0.6 41.3 2.2 S
19 Coal and petroleum products, n.e.c. S S 48.8 0.2 S S S
20 Basic chemicals 30.1 0.2 34.5 0.3 42.6 0.3 27.3
21 Pharmaceutical products 26.9 0.1 S S S S 23.3
22 Fertilizers S S S S S S 26.0
23 Chemical products and preparations, n.e.c. 27.9 0.9 34.6 0.7 35.2 1.6 44.6
24 Plastics and rubber 13.0 0.6 26.7 0.5 24.4 0.5 17.1
25 Logs and other wood in the rough S S S S S S 35.0
26 Wood products 13.6 0.5 33.7 1.9 38.8 1.0 13.2
27 Pulp, newsprint, paper, and paperboard 30.8 0.9 26.7 0.4 26.0 1.1 10.2
28 Paper or paperboard articles 19.7 0.7 31.3 0.7 24.8 1.0 17.9
29 Printed products 13.6 0.2 22.6 0.4 32.9 1.2 15.4
30 Textiles, leather, and articles of textiles or leather 28.5 0.9 28.2 28.7 0.1 5.2
31 Nonmetallic mineral products 32.1 0.5 S S 41.5 0.8 21.1
32 Base metal in primary or semi finished forms and in finished basic shapes 20.6 0.7 20.9 0.6 21.3 0.6 20.5
33 Articles of base metal 16.4 0.7 21.9 0.2 20.3 0.4 32.3
34 Machinery 10.9 0.8 15.0 0.1 23.3 0.6 23.9
35 Electronic and other electrical equipment and components and office equipment 10.7 0.7 15.0 20.1 0.3 12.4
36 Motorized and other vehicles (including parts) 43.1 3.2 49.5 1.0 34.1 0.8 26.6
37 Transportation equipment, n.e.c. 25.9 41.2 S S 20.7
38 Precision instruments and apparatus 35.2 0.5 S S S S 11.2
39 Furniture, mattresses and mattress supports, lamps, lighting fittings, and... 22.9 0.4 12.4 19.9 0.2 25.1
40 Miscellaneous manufactured products 13.5 0.8 16.5 0.3 23.9 0.5 8.1
41 Waste and scrap S S S S 45.3 0.1 45.3
43 Mixed freight 6.8 1.0 9.7 0.6 8.5 0.3 12.7
-- Commodity unknown 41.6 0.1 46.6 48.3 35.6

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.