Table B-3. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Distance Shipped for CBSA of Origin: 2002
Monday, July 2, 2012
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]
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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 |
9.9 |
– |
20.2 |
– |
15.9 |
– |
Less than 50 miles |
13.3 |
4.0 |
19.0 |
5.7 |
25.6 |
2.8 |
50 to 99 miles |
S |
S |
S |
S |
S |
S |
100 to 249 miles |
21.0 |
2.6 |
31.0 |
2.7 |
29.8 |
2.1 |
250 to 499 miles |
8.5 |
1.3 |
24.9 |
2.2 |
32.9 |
5.2 |
500 to 749 miles |
14.4 |
2.0 |
27.6 |
3.4 |
29.5 |
7.6 |
750 to 999 miles |
13.9 |
0.5 |
17.3 |
0.2 |
18.0 |
1.3 |
1,000 to 1,499 miles |
19.5 |
0.2 |
28.4 |
– |
29.5 |
0.3 |
1,500 to 1,999 miles |
24.5 |
0.4 |
41.1 |
0.1 |
41.7 |
1.4 |
2,000 miles or more |
S |
S |
S |
S |
S |
S |
Single modes
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
10.2 |
– |
20.2 |
– |
16.1 |
– |
Less than 50 miles |
13.5 |
4.1 |
19.0 |
5.7 |
25.6 |
2.8 |
50 to 99 miles |
S |
S |
S |
S |
S |
S |
100 to 249 miles |
21.4 |
2.7 |
31.1 |
2.7 |
29.9 |
2.2 |
250 to 499 miles |
8.9 |
1.4 |
25.1 |
2.2 |
33.1 |
5.3 |
500 to 749 miles |
14.8 |
2.0 |
27.7 |
3.4 |
29.5 |
7.5 |
750 to 999 miles |
12.8 |
0.5 |
17.7 |
0.2 |
18.4 |
1.1 |
1,000 to 1,499 miles |
28.1 |
0.2 |
30.1 |
– |
31.3 |
0.3 |
1,500 to 1,999 miles |
26.7 |
0.3 |
41.6 |
0.1 |
42.2 |
1.3 |
2,000 miles or more |
– |
– |
– |
– |
– |
– |
Truck
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
14.2 |
– |
44.5 |
– |
22.6 |
– |
Less than 50 miles |
14.6 |
4.8 |
39.0 |
5.3 |
36.4 |
1.7 |
50 to 99 miles |
S |
S |
S |
S |
S |
S |
100 to 249 miles |
13.5 |
2.1 |
17.7 |
3.1 |
16.4 |
2.7 |
250 to 499 miles |
11.0 |
2.1 |
18.4 |
3.2 |
18.4 |
3.2 |
500 to 749 miles |
13.6 |
0.8 |
18.5 |
1.0 |
18.4 |
2.2 |
750 to 999 miles |
15.6 |
0.5 |
21.5 |
0.6 |
20.5 |
1.3 |
1,000 to 1,499 miles |
28.8 |
0.2 |
35.0 |
0.1 |
36.1 |
0.6 |
1,500 to 1,999 miles |
30.6 |
0.4 |
S |
S |
S |
S |
2,000 miles or more |
– |
– |
– |
– |
– |
– |
Rail
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
18.4 |
– |
30.0 |
– |
22.8 |
– |
Less than 50 miles |
S |
S |
44.4 |
14.3 |
45.5 |
5.5 |
50 to 99 miles |
44.3 |
1.2 |
41.8 |
5.8 |
41.9 |
2.2 |
100 to 249 miles |
35.2 |
3.4 |
30.4 |
3.3 |
27.4 |
3.2 |
250 to 499 miles |
32.4 |
8.4 |
29.8 |
8.2 |
27.6 |
6.8 |
500 to 749 miles |
22.6 |
4.7 |
33.3 |
1.8 |
33.3 |
3.7 |
750 to 999 miles |
27.7 |
2.3 |
32.2 |
1.5 |
32.6 |
3.0 |
1,000 to 1,499 miles |
S |
S |
S |
S |
S |
S |
1,500 to 1,999 miles |
39.0 |
1.2 |
45.4 |
0.2 |
44.8 |
2.2 |
2,000 miles or more |
– |
– |
– |
– |
– |
– |
All other Single modes
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
35.5 |
– |
29.9 |
– |
28.9 |
– |
Less than 50 miles |
47.1 |
13.9 |
48.0 |
13.1 |
47.6 |
3.6 |
50 to 99 miles |
– |
– |
– |
– |
– |
– |
100 to 249 miles |
S |
S |
S |
S |
S |
S |
250 to 499 miles |
S |
S |
S |
S |
S |
S |
500 to 749 miles |
38.1 |
17.8 |
37.8 |
16.2 |
38.1 |
10.4 |
750 to 999 miles |
S |
S |
S |
S |
S |
S |
1,000 to 1,499 miles |
S |
S |
S |
S |
S |
S |
1,500 to 1,999 miles |
– |
– |
– |
– |
– |
– |
2,000 miles or more |
– |
– |
– |
– |
– |
– |
Multiple modes
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
21.4 |
– |
26.5 |
– |
31.5 |
– |
Less than 50 miles |
31.5 |
2.6 |
S |
S |
37.0 |
0.3 |
50 to 99 miles |
40.0 |
0.8 |
S |
S |
S |
S |
100 to 249 miles |
35.9 |
3.3 |
S |
S |
S |
S |
250 to 499 miles |
35.5 |
4.9 |
32.9 |
3.0 |
31.8 |
2.2 |
500 to 749 miles |
25.3 |
2.1 |
44.8 |
6.9 |
47.1 |
7.8 |
750 to 999 miles |
28.7 |
3.4 |
35.4 |
6.9 |
35.4 |
7.6 |
1,000 to 1,499 miles |
30.8 |
2.7 |
S |
S |
S |
S |
1,500 to 1,999 miles |
21.4 |
3.7 |
40.8 |
3.6 |
40.1 |
6.7 |
2,000 miles or more |
S |
S |
S |
S |
S |
S |
Parcel, USPS or courier
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
27.6 |
– |
35.2 |
– |
40.7 |
– |
Less than 50 miles |
36.6 |
3.6 |
35.1 |
4.4 |
39.2 |
0.4 |
50 to 99 miles |
40.0 |
1.4 |
S |
S |
S |
S |
100 to 249 miles |
35.5 |
3.4 |
27.3 |
2.2 |
29.3 |
1.2 |
250 to 499 miles |
37.2 |
4.8 |
36.5 |
4.6 |
38.2 |
3.0 |
500 to 749 miles |
29.3 |
1.8 |
44.7 |
1.7 |
44.3 |
2.1 |
750 to 999 miles |
33.1 |
4.4 |
49.2 |
3.3 |
S |
S |
1,000 to 1,499 miles |
43.0 |
1.4 |
43.9 |
1.4 |
43.1 |
2.3 |
1,500 to 1,999 miles |
35.7 |
1.5 |
30.0 |
0.7 |
29.5 |
2.3 |
2,000 miles or more |
S |
S |
S |
S |
S |
S |
All other multiple modes
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
36.6 |
– |
33.5 |
– |
36.1 |
– |
Less than 50 miles |
S |
S |
S |
S |
S |
S |
50 to 99 miles |
– |
– |
– |
– |
– |
– |
100 to 249 miles |
S |
S |
S |
S |
S |
S |
250 to 499 miles |
49.3 |
2.5 |
48.9 |
2.8 |
49.5 |
1.0 |
500 to 749 miles |
S |
S |
S |
S |
S |
S |
750 to 999 miles |
38.2 |
9.3 |
40.4 |
8.9 |
40.1 |
9.4 |
1,000 to 1,499 miles |
S |
S |
S |
S |
S |
S |
1,500 to 1,999 miles |
39.9 |
5.4 |
41.9 |
3.4 |
41.2 |
6.6 |
2,000 miles or more |
S |
S |
S |
S |
S |
S |
Other and unknown modes
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
19.1 |
– |
19.6 |
– |
36.0 |
– |
Less than 50 miles |
35.6 |
14.6 |
32.9 |
15.1 |
26.9 |
15.6 |
50 to 99 miles |
S |
S |
S |
S |
S |
S |
100 to 249 miles |
S |
S |
S |
S |
S |
S |
250 to 499 miles |
S |
S |
47.2 |
10.8 |
48.7 |
11.8 |
500 to 749 miles |
40.5 |
7.5 |
S |
S |
S |
S |
750 to 999 miles |
S |
S |
46.8 |
4.7 |
47.2 |
9.2 |
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 |
– |
– |
– |
– |
– |
– |
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.