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Table B–3. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Distance Shipped for CBSA of Origin: 2002
[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]
Excel | CSV
All modes
| Distance Shipped |
Value |
Tons |
Ton-miles |
| CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
| All distances |
40.4 |
– |
21.3 |
– |
21.0 |
– |
| Less than 50 miles |
41.1 |
4.6 |
23.3 |
4.2 |
25.9 |
6.8 |
| 50 to 99 miles |
22.3 |
2.3 |
31.4 |
2.4 |
29.0 |
2.9 |
| 100 to 249 miles |
S |
S |
28.6 |
1.1 |
29.6 |
2.5 |
| 250 to 499 miles |
39.3 |
1.7 |
S |
S |
S |
S |
| 500 to 749 miles |
33.0 |
0.9 |
40.6 |
0.4 |
40.8 |
1.5 |
| 750 to 999 miles |
S |
S |
40.1 |
0.1 |
39.5 |
0.9 |
| 1,000 to 1,499 miles |
S |
S |
S |
S |
S |
S |
| 1,500 to 1,999 miles |
S |
S |
S |
S |
S |
S |
| 2,000 miles or more |
34.7 |
0.3 |
S |
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
NOTE: The Introduction and appendixes give
information onf 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, Metropolitan Data,
December 2004.
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