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Table B–12. Estimated Measures of Reliability for Shipment Characteristics by Commodity Group for the United States: 2002 and 1997
[Estimates are shown as percents and are based on data from the 2002 and 1997 Commodity Flow Surveys]
Excel | CSV
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Total |
1.3 |
0.9 |
2.0 |
2.0 |
1.6 |
2.8 |
3.7 |
2.3 |
5.3 |
2.9 |
2.6 |
4.4 |
| 01-05 |
Agriculture products and
fish |
3.2 |
2.5 |
4.3 |
4.9 |
3.4 |
6.8 |
10.1 |
5.3 |
14.6 |
11.7 |
11.4 |
18.4 |
| 06-09 |
Grains, alcohol, and tobacco products |
3.5 |
2.7 |
4.8 |
4.3 |
2.8 |
5.7 |
5.0 |
2.6 |
6.6 |
11.6 |
13.2 |
23.6 |
| 10-14 |
Stones, non-metallic minerals, and metallic ores |
6.5 |
5.4 |
8.7 |
7.3 |
3.9 |
8.4 |
9.7 |
5.6 |
13.0 |
9.6 |
6.5 |
10.2 |
| 15-19 |
Coal and petroleum products |
3.3 |
3.4 |
5.8 |
4.4 |
2.7 |
5.6 |
12.3 |
6.9 |
17.3 |
10.7 |
14.1 |
20.3 |
| 20-24 |
Pharmaceutical and
chemical products |
4.2 |
2.9 |
7.0 |
9.5 |
4.2 |
13.0 |
7.0 |
7.1 |
11.6 |
3.9 |
3.7 |
5.5 |
| 25-30 |
Logs, wood products, and textile and leather |
3.6 |
5.3 |
6.8 |
8.8 |
3.6 |
10.4 |
5.7 |
3.8 |
7.7 |
2.5 |
4.5 |
6.1 |
| 31-34 |
Base metal and machinery |
3.8 |
1.3 |
4.4 |
6.2 |
6.3 |
9.4 |
5.9 |
3.0 |
7.8 |
4.3 |
4.7 |
6.3 |
| 35-38 |
Electronic, motorized
vehicles,
and precision instruments |
4.6 |
1.8 |
5.8 |
6.4 |
2.9 |
10.6 |
7.3 |
3.2 |
10.5 |
3.6 |
2.5 |
5.5 |
| 39-43 |
Furniture and miscellaneous manufactured products |
2.4 |
3.4 |
7.4 |
7.1 |
6.2 |
14.0 |
9.0 |
5.4 |
14.3 |
6.4 |
4.3 |
6.9 |
| -- |
Commodity Unknown |
9.9 |
11.0 |
7.0 |
22.3 |
18.1 |
20.0 |
41.7 |
15.5 |
47.5 |
8.8 |
9.7 |
13.1 |
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 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: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, United States Data, December 2004.
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