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 13.8 10.3 6.4 14.3
01 Live animals and live fish S S S S S S 31.6
02 Cereal grains S S S S 24.0 0.7 S
03 Other agricultural products 46.0 41.0 S S S
04 Animal feed and products of animal origin, n.e.c. S S S S S S 42.6
05 Meat, fish, seafood, and their preparations 16.4 0.7 16.2 0.2 20.6 0.5 S
06 Milled grain products and preparations, and bakery products 44.7 0.4 36.0 0.3 48.4 1.0 41.5
07 Other prepared foodstuffs and fats and oils 23.5 0.6 S S 46.3 0.8 31.3
08 Alcoholic beverages 38.6 0.4 S S 44.3 24.7
09 Tobacco products S S S S S S 31.6
10 Monumental or building stone
11 Natural sands 24.8 36.7 2.4 26.9 1.0 46.3
12 Gravel and crushed stone 18.3 16.5 3.5 18.3 1.9 24.3
13 Nonmetallic minerals n.e.c. S S S S S S 42.1
14 Metallic ores and concentrates 41.2 41.4 41.2 25.8
15 Coal 39.6 37.0 0.6 S S 26.0
17 Gasoline and aviation turbine fuel 33.5 1.5 31.9 2.8 43.1 1.0 44.6
18 Fuel oils 37.5 0.8 33.5 1.5 29.8 0.2 S
19 Coal and petroleum products, n.e.c. 26.4 0.5 19.7 1.2 21.1 1.9 S
20 Basic chemicals 27.4 0.2 S S S S S
21 Pharmaceutical products 30.5 1.6 27.4 45.1 44.2
22 Fertilizers 22.6 0.2 21.8 1.1 26.6 2.9 26.7
23 Chemical products and preparations, n.e.c. 38.4 0.5 32.3 29.5 0.2 S
24 Plastics and rubber 17.0 0.8 15.7 0.2 16.0 0.9 30.0
25 Logs and other wood in the rough S S S S S S 31.6
26 Wood products 14.9 0.2 21.5 0.3 20.1 0.3 14.7
27 Pulp, newsprint, paper, and paperboard 42.9 0.4 44.8 0.4 49.7 1.8 42.4
28 Paper or paperboard articles 16.5 0.3 22.9 0.2 18.1 0.3 S
29 Printed products 46.1 0.6 S S S S S
30 Textiles, leather, and articles of textiles or leather 22.2 0.5 27.8 33.8 15.7
31 Nonmetallic mineral products 30.6 0.9 33.9 3.1 38.4 4.5 17.9
32 Base metal in primary or semi finished forms and in finished basic shapes 20.0 0.6 23.9 0.5 30.4 0.7 26.9
33 Articles of base metal 15.9 1.0 S S 30.2 1.1 28.1
34 Machinery 15.2 1.8 14.6 0.1 20.6 0.6 33.6
35 Electronic and other electrical equipment and components and office equipment S S 42.3 0.4 40.9 0.9 16.0
36 Motorized and other vehicles (including parts) 36.7 3.6 S S S S 28.0
37 Transportation equipment, n.e.c. 23.3 0.5 43.3 50.0 0.2 8.8
38 Precision instruments and apparatus S S 42.2 46.9 38.2
39 Furniture, mattresses and mattress supports, lamps, lighting fittings, and... S S S S S S S
40 Miscellaneous manufactured products 15.5 0.5 23.0 0.1 21.8 0.2 18.3
41 Waste and scrap S S S S S S 28.2
43 Mixed freight 17.5 2.1 24.9 0.4 23.6 0.8 22.9
-- Commodity unknown 26.8 44.3 S S 23.9

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.