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 15.1 16.3 15.9 12.0
01 Live animals and live fish S S S S S S 31.7
02 Cereal grains S S S S 38.2 0.2 22.1
03 Other agricultural products 27.7 0.6 19.4 0.4 38.6 1.3 21.6
04 Animal feed and products of animal origin, n.e.c. 24.9 0.2 29.2 1.0 30.0 0.6 31.3
05 Meat, fish, seafood, and their preparations 33.7 0.9 32.5 0.1 32.0 0.3 22.1
06 Milled grain products and preparations, and bakery products 25.7 0.8 42.1 0.6 39.7 0.4 S
07 Other prepared foodstuffs and fats and oils 10.7 0.6 11.1 0.4 23.8 1.0 27.1
08 Alcoholic beverages S S 49.5 0.2 S S S
09 Tobacco products S S S S S S 31.6
10 Monumental or building stone S S S S S S 31.6
11 Natural sands S S 46.0 0.3 S S 33.5
12 Gravel and crushed stone 41.8 0.1 41.0 5.5 28.6 0.6 31.5
13 Nonmetallic minerals n.e.c. S S S S S S 43.0
14 Metallic ores and concentrates S S S S S S 29.9
15 Coal
17 Gasoline and aviation turbine fuel 36.6 1.0 34.0 1.9 38.9 0.5 23.2
18 Fuel oils 34.4 0.5 33.0 1.3 33.0 0.1 27.7
19 Coal and petroleum products, n.e.c. 27.7 0.6 38.0 1.4 34.3 0.7 S
20 Basic chemicals 42.1 0.7 S S S S 29.2
21 Pharmaceutical products S S S S S S 21.5
22 Fertilizers 32.6 39.4 46.2 25.5
23 Chemical products and preparations, n.e.c. 33.9 0.2 S S S S 26.9
24 Plastics and rubber 26.1 0.8 31.3 0.3 30.5 0.4 25.6
25 Logs and other wood in the rough S S S S S S 32.7
26 Wood products 12.3 1.3 16.0 3.8 26.6 5.8 22.5
27 Pulp, newsprint, paper, and paperboard 14.4 0.3 9.8 0.6 12.5 0.9 39.9
28 Paper or paperboard articles 35.7 0.8 39.8 0.6 S S S
29 Printed products 21.2 0.3 20.9 24.4 0.1 20.1
30 Textiles, leather, and articles of textiles or leather S S S S S S 12.1
31 Nonmetallic mineral products 31.6 0.5 38.7 3.7 32.7 0.6 S
32 Base metal in primary or semi finished forms and in finished basic shapes 23.7 0.6 23.3 0.6 23.3 1.1 23.5
33 Articles of base metal 27.4 0.5 22.3 0.1 S S 32.4
34 Machinery 25.5 1.0 21.8 27.3 0.4 17.9
35 Electronic and other electrical equipment and components and office equipment S S 25.4 32.1 0.2 16.3
36 Motorized and other vehicles (including parts) 28.3 1.7 27.5 0.1 33.4 0.3 16.8
37 Transportation equipment, n.e.c. 30.5 0.3 S S S S 12.1
38 Precision instruments and apparatus 26.5 0.6 36.1 44.0 12.9
39 Furniture, mattresses and mattress supports, lamps, lighting fittings, and... 37.7 0.4 S S S S 26.4
40 Miscellaneous manufactured products 27.1 1.2 22.7 0.2 33.6 0.4 11.2
41 Waste and scrap S S S S S S S
43 Mixed freight 14.6 1.8 18.1 0.5 17.4 0.3 28.0
-- Commodity unknown S S 44.7 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.