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 3.4 8.0 24.7 32.0
01 Live animals and live fish S S S S S S 31.6
02 Cereal grains 31.9 1.1 33.4 1.6 48.4 5.6 S
03 Other agricultural products S S S S S S 42.6
04 Animal feed and products of animal origin, n.e.c. S S S S 36.6 38.8
05 Meat, fish, seafood, and their preparations 40.4 0.3 46.6 46.7 48.7
06 Milled grain products and preparations, and bakery products 32.6 0.7 28.1 0.1 31.6 0.3 27.4
07 Other prepared foodstuffs and fats and oils 29.4 1.2 25.6 0.3 32.7 0.2 28.4
08 Alcoholic beverages 10.2 0.2 13.0 23.1 9.1
09 Tobacco products 27.9 0.2 21.7 24.2 13.0
10 Monumental or building stone S S S S S S 31.6
11 Natural sands S S S S S S 31.6
12 Gravel and crushed stone 41.4 44.1 1.0 43.2 23.6
13 Nonmetallic minerals n.e.c. 39.3 0.4 S S S S 32.5
14 Metallic ores and concentrates S S S S S S 39.8
15 Coal 15.4 0.8 8.6 3.0 26.3 10.5 S
17 Gasoline and aviation turbine fuel 17.9 2.4 19.5 1.4 22.6 0.6 12.0
18 Fuel oils 26.4 1.5 25.3 0.8 43.4 0.7 23.3
19 Coal and petroleum products, n.e.c. 19.4 0.6 27.6 0.7 47.5 0.7 S
20 Basic chemicals 17.3 0.2 42.9 0.2 S S S
21 Pharmaceutical products S S S S S S 25.8
22 Fertilizers S S 44.2 0.2 S S S
23 Chemical products and preparations, n.e.c. 21.4 0.3 S S 44.3 0.1 S
24 Plastics and rubber 33.7 0.4 43.5 27.6 43.9
25 Logs and other wood in the rough S S S S S S S
26 Wood products 15.2 1.4 23.4 0.8 27.9 2.9 13.7
27 Pulp, newsprint, paper, and paperboard 41.8 0.9 45.1 0.3 46.0 1.4 25.1
28 Paper or paperboard articles 25.2 21.2 28.7 32.4
29 Printed products 19.1 30.4 34.0 24.1
30 Textiles, leather, and articles of textiles or leather 30.1 0.4 S S 23.9 14.4
31 Nonmetallic mineral products 32.1 0.4 32.0 0.6 46.4 1.2 S
32 Base metal in primary or semi finished forms and in finished basic shapes 39.8 0.7 41.5 S S S
33 Articles of base metal 35.0 0.7 38.7 48.3 0.2 S
34 Machinery 19.7 0.6 27.5 35.5 S
35 Electronic and other electrical equipment and components and office equipment 26.0 0.6 37.9 30.8 S
36 Motorized and other vehicles (including parts) 12.0 0.5 26.1 8.1 S
37 Transportation equipment, n.e.c.
38 Precision instruments and apparatus 38.1 0.8 30.1 38.4 27.4
39 Furniture, mattresses and mattress supports, lamps, lighting fittings, and... S S S S S S 31.0
40 Miscellaneous manufactured products 20.8 1.4 28.3 36.3 26.4
41 Waste and scrap S S S S S S 31.3
43 Mixed freight 12.1 0.9 14.8 25.8 0.3 7.6
-- Commodity unknown S S 27.8 S S 35.9

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.