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 20.9 8.9 23.7 20.5
01 Live animals and live fish 32.9 0.8 31.9 0.2 43.9 0.2 29.0
02 Cereal grains 21.4 1.7 23.5 6.0 47.5 9.9 40.7
03 Other agricultural products 13.9 0.9 14.9 2.1 25.6 4.4 S
04 Animal feed and products of animal origin, n.e.c. S S S S 40.5 1.9 29.8
05 Meat, fish, seafood, and their preparations 47.7 2.4 49.6 0.8 S S 24.1
06 Milled grain products and preparations, and bakery products S S S S S S S
07 Other prepared foodstuffs and fats and oils 24.3 1.4 23.6 0.5 33.2 0.8 S
08 Alcoholic beverages 24.2 0.3 40.6 0.2 S S 19.0
09 Tobacco products S S S S S S 26.8
10 Monumental or building stone S S S S S S 28.0
11 Natural sands 48.1 S S S S 23.2
12 Gravel and crushed stone 45.3 0.1 S S 36.2 0.6 48.6
13 Nonmetallic minerals n.e.c. 36.0 S S 34.1 1.1 S
14 Metallic ores and concentrates S S S S S S 31.6
15 Coal
17 Gasoline and aviation turbine fuel 11.0 0.7 13.1 0.6 15.5 0.4 20.2
18 Fuel oils 20.0 0.4 20.6 0.4 24.2 0.5 38.2
19 Coal and petroleum products, n.e.c. 45.1 S S S S 24.6
20 Basic chemicals 39.4 0.4 34.3 39.8 S
21 Pharmaceutical products 35.2 0.6 S S S S 27.4
22 Fertilizers 43.6 0.3 43.9 1.2 S S 37.2
23 Chemical products and preparations, n.e.c. 49.0 0.3 S S 26.7 41.6
24 Plastics and rubber 28.3 1.3 39.7 0.3 33.0 0.7 43.2
25 Logs and other wood in the rough S S S S S S 29.7
26 Wood products 17.8 0.6 15.6 0.5 19.2 1.6 22.7
27 Pulp, newsprint, paper, and paperboard 40.6 0.1 42.8 S S 23.4
28 Paper or paperboard articles 28.7 0.3 28.7 0.1 32.5 0.1 S
29 Printed products 30.9 0.3 S S S S 20.6
30 Textiles, leather, and articles of textiles or leather 20.0 27.2 27.4 21.9
31 Nonmetallic mineral products 36.9 0.5 S S 40.4 0.9 30.4
32 Base metal in primary or semi finished forms and in finished basic shapes 40.8 0.6 48.9 0.1 S S 25.3
33 Articles of base metal S S S S 30.9 0.2 29.6
34 Machinery 24.2 1.5 20.7 0.1 30.6 0.3 33.8
35 Electronic and other electrical equipment and components and office equipment S S S S S S 19.9
36 Motorized and other vehicles (including parts) 23.0 1.8 21.9 28.2 0.2 46.2
37 Transportation equipment, n.e.c. S S 48.3 S S 29.5
38 Precision instruments and apparatus 49.8 0.1 34.2 44.2 21.5
39 Furniture, mattresses and mattress supports, lamps, lighting fittings, and... 36.2 1.1 39.7 0.1 49.9 0.2 22.8
40 Miscellaneous manufactured products 38.8 2.2 32.1 0.1 33.3 0.6 15.0
41 Waste and scrap S S S S S S 32.1
43 Mixed freight 23.3 0.9 27.0 0.2 23.3 0.1 23.6
-- Commodity unknown 49.7 0.1 S S S S 49.7

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.