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Table B–5a. Estimated Measures of Reliability for Export Shipment
Characteristics by Commodity Group: 2002
[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]
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All Commodities |
4.9 |
– |
11.8 |
– |
01-05 |
Agriculture products and fish |
14.1 |
0.9 |
17.4 |
3.9 |
06-09 |
Grains, alcohol, and tobacco products |
18.3 |
0.3 |
13.8 |
0.6 |
10-14 |
Stones, nonmetallic minerals, and metallic ores. |
16.9 |
0.1 |
23.9 |
1.9 |
15-19 |
Coal and petroleum products |
31.2 |
0.3 |
24.2 |
2.7 |
20-24 |
Pharmaceutical and chemical products |
7.2 |
0.9 |
23.2 |
1.6 |
25-30 |
Logs, wood products, and textile and leather |
7.3 |
0.5 |
11.0 |
0.8 |
31-34 |
Base metal and machinery |
7.0 |
1.3 |
12.4 |
1.0 |
35-38 |
Electronic, motorized vehicles, and precision instruments |
8.5 |
2.2 |
10.1 |
0.6 |
39-43 |
Furniture, mixed freight and misc. manufactured products |
8.2 |
0.6 |
15.4 |
0.5 |
-- |
Commodity unknown |
32.1 |
0.1 |
S |
S |
KEY:
– Represents an estimate 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
NOTE: The Introduction and
appendixes give information on confidentiality protection, sampling error,
nonsampling error, sample design, and definitions. Links to this information
on the Internet may be found at www.census.gov/cfs.
SOURCE: Research and Innovative Technologies
Administration, Bureau of Transportation Statistics (USDOT) and U.S. Census
Bureau, 2002 Commodity Flow Survey, Export Data, March 2005.
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