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 |
27.8 |
– |
34.4 |
– |
16.7 |
– |
Less than 50 miles |
16.9 |
5.3 |
S |
S |
S |
S |
50 to 99 miles |
14.9 |
0.9 |
15.6 |
1.2 |
16.3 |
0.7 |
100 to 249 miles |
37.0 |
2.3 |
13.1 |
3.5 |
13.5 |
2.7 |
250 to 499 miles |
42.0 |
5.5 |
15.4 |
3.2 |
15.5 |
4.3 |
500 to 749 miles |
37.9 |
0.6 |
22.7 |
0.8 |
24.3 |
1.3 |
750 to 999 miles |
16.7 |
1.1 |
28.5 |
1.3 |
29.5 |
3.4 |
1,000 to 1,499 miles |
48.1 |
1.0 |
S |
S |
S |
S |
1,500 to 1,999 miles |
32.1 |
0.1 |
27.8 |
– |
27.5 |
0.2 |
2,000 miles or more |
16.0 |
0.3 |
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 |
30.4 |
– |
35.3 |
– |
17.1 |
– |
Less than 50 miles |
17.1 |
6.2 |
S |
S |
S |
S |
50 to 99 miles |
14.6 |
0.9 |
15.4 |
1.3 |
16.1 |
0.8 |
100 to 249 miles |
38.6 |
2.4 |
13.2 |
3.6 |
13.7 |
2.9 |
250 to 499 miles |
43.5 |
6.2 |
15.9 |
3.3 |
15.9 |
4.3 |
500 to 749 miles |
46.8 |
0.7 |
24.0 |
0.8 |
25.8 |
1.5 |
750 to 999 miles |
16.6 |
0.8 |
31.8 |
1.3 |
33.1 |
3.1 |
1,000 to 1,499 miles |
26.1 |
0.3 |
S |
S |
S |
S |
1,500 to 1,999 miles |
S |
S |
29.4 |
– |
29.1 |
0.2 |
2,000 miles or more |
19.7 |
0.3 |
S |
S |
S |
S |
Truck
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
31.0 |
– |
37.5 |
– |
20.3 |
– |
Less than 50 miles |
17.1 |
6.4 |
S |
S |
S |
S |
50 to 99 miles |
14.6 |
0.9 |
15.4 |
1.4 |
16.1 |
0.8 |
100 to 249 miles |
38.8 |
2.4 |
13.5 |
3.8 |
14.0 |
2.8 |
250 to 499 miles |
44.5 |
6.5 |
17.3 |
3.0 |
17.6 |
4.5 |
500 to 749 miles |
S |
S |
25.8 |
0.6 |
26.2 |
1.2 |
750 to 999 miles |
17.8 |
0.7 |
38.3 |
1.1 |
39.6 |
2.2 |
1,000 to 1,499 miles |
26.7 |
0.3 |
S |
S |
S |
S |
1,500 to 1,999 miles |
S |
S |
29.4 |
– |
29.1 |
0.3 |
2,000 miles or more |
22.5 |
0.3 |
S |
S |
S |
S |
Rail
Distance Shipped |
Value |
Tons |
Ton-miles |
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
All distances |
41.4 |
– |
36.5 |
– |
42.2 |
– |
Less than 50 miles |
49.8 |
3.7 |
S |
S |
S |
S |
50 to 99 miles |
– |
– |
– |
– |
– |
– |
100 to 249 miles |
37.1 |
3.0 |
34.5 |
2.8 |
33.0 |
1.0 |
250 to 499 miles |
36.1 |
7.9 |
31.7 |
7.2 |
29.8 |
11.4 |
500 to 749 miles |
S |
S |
S |
S |
S |
S |
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 |
S |
S |
S |
S |
S |
S |
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 |
30.3 |
– |
S |
S |
S |
S |
Less than 50 miles |
S |
S |
S |
S |
S |
S |
50 to 99 miles |
S |
S |
S |
S |
S |
S |
100 to 249 miles |
46.6 |
3.4 |
36.6 |
7.1 |
S |
S |
250 to 499 miles |
32.1 |
11.5 |
S |
S |
S |
S |
500 to 749 miles |
S |
S |
S |
S |
S |
S |
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 |
S |
S |
S |
S |
S |
S |
2,000 miles or more |
40.6 |
9.8 |
32.4 |
10.9 |
34.7 |
14.2 |
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 |
21.1 |
– |
40.2 |
– |
38.3 |
– |
Less than 50 miles |
18.0 |
1.4 |
22.7 |
1.5 |
26.8 |
– |
50 to 99 miles |
26.0 |
1.2 |
34.0 |
0.6 |
33.2 |
0.1 |
100 to 249 miles |
26.8 |
1.7 |
35.1 |
3.5 |
32.4 |
1.4 |
250 to 499 miles |
18.7 |
2.8 |
48.9 |
10.3 |
49.1 |
7.1 |
500 to 749 miles |
22.6 |
2.5 |
46.4 |
2.6 |
48.2 |
1.9 |
750 to 999 miles |
32.9 |
4.5 |
26.9 |
6.0 |
26.8 |
6.0 |
1,000 to 1,499 miles |
S |
S |
45.9 |
1.2 |
45.9 |
2.3 |
1,500 to 1,999 miles |
24.5 |
0.6 |
33.7 |
0.2 |
35.1 |
0.9 |
2,000 miles or more |
25.0 |
1.2 |
49.4 |
0.6 |
46.9 |
2.6 |
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 |
22.1 |
– |
21.4 |
– |
30.0 |
– |
Less than 50 miles |
18.9 |
1.5 |
22.1 |
1.9 |
31.1 |
– |
50 to 99 miles |
26.0 |
1.3 |
34.0 |
0.7 |
33.2 |
0.1 |
100 to 249 miles |
26.9 |
1.8 |
35.6 |
3.0 |
33.0 |
1.2 |
250 to 499 miles |
19.3 |
2.9 |
28.8 |
4.9 |
27.6 |
3.9 |
500 to 749 miles |
24.2 |
2.7 |
24.7 |
1.9 |
24.9 |
1.8 |
750 to 999 miles |
34.8 |
4.8 |
22.1 |
2.7 |
21.6 |
2.3 |
1,000 to 1,499 miles |
S |
S |
45.9 |
1.7 |
45.9 |
2.7 |
1,500 to 1,999 miles |
24.5 |
0.6 |
33.7 |
0.6 |
35.1 |
2.1 |
2,000 miles or more |
24.9 |
1.3 |
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 |
36.9 |
– |
S |
S |
47.5 |
– |
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 |
40.1 |
9.8 |
S |
S |
S |
S |
500 to 749 miles |
S |
S |
S |
S |
S |
S |
750 to 999 miles |
42.3 |
9.3 |
41.0 |
7.2 |
40.6 |
8.2 |
1,000 to 1,499 miles |
– |
– |
– |
– |
– |
– |
1,500 to 1,999 miles |
– |
– |
– |
– |
– |
– |
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 |
33.8 |
– |
35.6 |
– |
36.8 |
– |
Less than 50 miles |
38.1 |
9.0 |
49.7 |
8.7 |
S |
S |
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 |
42.7 |
0.9 |
41.4 |
4.1 |
500 to 749 miles |
S |
S |
S |
S |
S |
S |
750 to 999 miles |
S |
S |
42.0 |
9.7 |
42.8 |
11.4 |
1,000 to 1,499 miles |
36.0 |
0.8 |
43.5 |
2.5 |
43.6 |
4.5 |
1,500 to 1,999 miles |
S |
S |
S |
S |
S |
S |
2,000 miles or more |
S |
S |
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.