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 5.4 7.8 9.4 7.7
01 Live animals and live fish
02 Cereal grains S S S S S S 26.2
03 Other agricultural products 36.9 0.5 47.4 1.5 S S 46.6
04 Animal feed and products of animal origin, n.e.c. S S S S 44.1 0.2 27.5
05 Meat, fish, seafood, and their preparations 28.5 0.2 23.8 29.5 0.1 S
06 Milled grain products and preparations, and bakery products 30.6 0.2 39.5 0.3 41.8 0.6 33.4
07 Other prepared foodstuffs and fats and oils 17.3 0.6 46.9 2.6 26.3 1.7 19.9
08 Alcoholic beverages 38.1 0.3 46.7 0.3 42.3 21.4
09 Tobacco products 23.2 23.4 25.1 21.5
10 Monumental or building stone S S S S S S S
11 Natural sands S S 32.0 2.1 47.7 1.2 35.6
12 Gravel and crushed stone 13.3 12.9 1.8 28.9 2.2 12.4
13 Nonmetallic minerals n.e.c. S S S S S S 18.9
14 Metallic ores and concentrates 30.8 28.0 1.5 36.0 3.5 20.9
15 Coal S S S S S S 31.6
17 Gasoline and aviation turbine fuel 15.6 0.4 22.7 1.9 18.5 0.4 11.4
18 Fuel oils 20.0 0.1 21.7 0.6 30.8 0.2 16.4
19 Coal and petroleum products, n.e.c. 44.1 0.6 49.8 2.0 S S 41.0
20 Basic chemicals 27.3 0.2 32.6 0.7 41.6 0.6 S
21 Pharmaceutical products 20.7 0.7 S S S S 7.4
22 Fertilizers S S S S S S 47.5
23 Chemical products and preparations, n.e.c. S S 27.5 0.2 26.0 0.4 12.9
24 Plastics and rubber 23.2 0.8 40.8 0.6 S S 12.8
25 Logs and other wood in the rough S S S S S S 30.8
26 Wood products 16.7 0.2 16.1 0.3 15.3 0.5 16.4
27 Pulp, newsprint, paper, and paperboard 12.9 0.1 9.6 0.2 8.0 0.3 27.1
28 Paper or paperboard articles 35.6 0.2 S S S S 18.7
29 Printed products 22.9 0.2 21.1 35.1 0.1 11.2
30 Textiles, leather, and articles of textiles or leather S S 34.8 48.7 0.3 6.4
31 Nonmetallic mineral products 21.8 0.2 23.3 1.6 39.7 2.3 39.2
32 Base metal in primary or semi finished forms and in finished basic shapes 18.9 0.7 17.2 1.4 22.7 1.6 18.2
33 Articles of base metal 20.8 0.8 24.7 0.4 20.1 0.5 14.4
34 Machinery 10.0 1.2 12.6 0.3 17.8 0.7 20.5
35 Electronic and other electrical equipment and components and office equipment 26.7 0.9 S S S S 19.9
36 Motorized and other vehicles (including parts) 9.6 1.9 8.0 0.6 14.0 2.4 17.3
37 Transportation equipment, n.e.c. 39.6 0.2 S S S S 4.0
38 Precision instruments and apparatus 35.3 0.5 36.0 S S 34.8
39 Furniture, mattresses and mattress supports, lamps, lighting fittings, and... 31.6 1.1 43.8 1.2 22.1 0.8 18.4
40 Miscellaneous manufactured products 14.5 0.2 28.4 20.3 0.1 10.5
41 Waste and scrap 49.3 0.3 44.3 1.9 43.1 1.4 16.0
43 Mixed freight 15.5 0.9 21.3 0.7 23.6 0.3 31.1
-- Commodity unknown 29.8 38.8 39.0 42.2

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.