Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for CBSA of Origin: 2002
Monday, July 2, 2012
Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size 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
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
21.1 |
– |
9.2 |
– |
25.2 |
– |
8.4 |
Less than 50 lbs |
18.4 |
0.8 |
26.5 |
– |
31.1 |
– |
11.1 |
50 to 99 lbs |
24.8 |
0.5 |
25.8 |
– |
26.8 |
– |
18.0 |
100 to 499 lbs |
13.6 |
0.9 |
16.1 |
0.1 |
22.4 |
0.2 |
12.3 |
500 to 749 lbs |
11.1 |
0.3 |
18.4 |
– |
30.8 |
0.1 |
18.9 |
750 to 999 lbs |
18.4 |
0.2 |
22.7 |
– |
25.1 |
– |
22.0 |
1,000 to 9,999 lbs |
13.7 |
2.8 |
13.5 |
0.6 |
12.8 |
1.2 |
13.1 |
10,000 to 49,999 lbs |
20.9 |
2.8 |
11.5 |
3.9 |
11.4 |
4.4 |
15.8 |
50,000 to 99,999 lbs |
S |
S |
10.2 |
2.0 |
16.1 |
1.4 |
19.7 |
100,000 lbs or more |
45.2 |
2.4 |
23.1 |
4.8 |
45.1 |
6.4 |
12.3 |
Single modes
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
22.6 |
– |
9.1 |
– |
23.6 |
– |
10.1 |
Less than 50 lbs |
27.7 |
0.5 |
27.7 |
– |
S |
S |
37.1 |
50 to 99 lbs |
31.4 |
0.3 |
18.8 |
– |
21.8 |
– |
34.1 |
100 to 499 lbs |
15.9 |
0.9 |
18.5 |
– |
24.9 |
0.2 |
12.7 |
500 to 749 lbs |
12.4 |
0.3 |
20.0 |
– |
32.7 |
0.2 |
20.2 |
750 to 999 lbs |
19.3 |
0.2 |
23.8 |
– |
26.2 |
– |
22.0 |
1,000 to 9,999 lbs |
14.0 |
3.2 |
13.8 |
0.6 |
12.9 |
1.3 |
13.2 |
10,000 to 49,999 lbs |
21.5 |
2.7 |
11.8 |
4.1 |
9.2 |
4.7 |
14.1 |
50,000 to 99,999 lbs |
S |
S |
10.3 |
2.0 |
16.3 |
1.4 |
20.3 |
100,000 lbs or more |
45.8 |
2.5 |
23.6 |
4.9 |
45.5 |
6.6 |
12.0 |
Truck
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
18.4 |
– |
8.1 |
– |
7.9 |
– |
10.0 |
Less than 50 lbs |
29.0 |
0.6 |
28.0 |
– |
S |
S |
34.8 |
50 to 99 lbs |
33.3 |
0.4 |
19.0 |
– |
23.0 |
– |
32.7 |
100 to 499 lbs |
16.2 |
1.0 |
18.5 |
0.1 |
25.1 |
0.2 |
12.5 |
500 to 749 lbs |
13.1 |
0.3 |
20.0 |
– |
32.8 |
0.2 |
20.6 |
750 to 999 lbs |
19.4 |
0.3 |
23.8 |
– |
26.2 |
0.1 |
22.0 |
1,000 to 9,999 lbs |
13.1 |
3.2 |
14.1 |
0.6 |
13.1 |
1.6 |
10.1 |
10,000 to 49,999 lbs |
22.1 |
3.5 |
11.9 |
3.7 |
9.5 |
2.5 |
14.9 |
50,000 to 99,999 lbs |
S |
S |
10.3 |
2.6 |
17.6 |
1.6 |
21.9 |
100,000 lbs or more |
26.8 |
0.2 |
35.0 |
2.6 |
23.2 |
0.6 |
33.0 |
Rail
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
S |
S |
44.3 |
– |
49.5 |
– |
11.3 |
Less than 50 lbs |
– |
– |
– |
– |
– |
– |
– |
50 to 99 lbs |
– |
– |
– |
– |
– |
– |
– |
100 to 499 lbs |
S |
S |
S |
S |
S |
S |
31.6 |
500 to 749 lbs |
– |
– |
– |
– |
– |
– |
– |
750 to 999 lbs |
– |
– |
– |
– |
– |
– |
– |
1,000 to 9,999 lbs |
42.1 |
6.4 |
43.0 |
0.5 |
43.7 |
1.4 |
24.7 |
10,000 to 49,999 lbs |
24.7 |
4.7 |
22.3 |
1.4 |
25.6 |
3.6 |
18.1 |
50,000 to 99,999 lbs |
43.6 |
2.7 |
31.0 |
0.9 |
37.7 |
1.3 |
23.3 |
100,000 lbs or more |
S |
S |
46.2 |
2.0 |
S |
S |
10.4 |
All other Single modes
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
18.5 |
– |
22.1 |
– |
28.3 |
– |
10.6 |
Less than 50 lbs |
40.3 |
1.2 |
19.0 |
– |
19.9 |
0.2 |
7.2 |
50 to 99 lbs |
44.7 |
1.6 |
31.5 |
– |
39.3 |
– |
17.3 |
100 to 499 lbs |
30.0 |
1.1 |
20.3 |
– |
19.1 |
0.4 |
10.7 |
500 to 749 lbs |
S |
S |
45.6 |
– |
S |
S |
23.7 |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
31.6 |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
32.7 |
10,000 to 49,999 lbs |
S |
S |
S |
S |
S |
S |
31.5 |
50,000 to 99,999 lbs |
S |
S |
S |
S |
S |
S |
S |
100,000 lbs or more |
20.7 |
12.0 |
22.1 |
0.3 |
28.8 |
5.1 |
17.8 |
Multiple modes
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
12.2 |
– |
45.3 |
– |
S |
S |
7.6 |
Less than 50 lbs |
16.8 |
4.8 |
31.0 |
5.8 |
28.5 |
5.5 |
6.1 |
50 to 99 lbs |
23.8 |
2.8 |
48.2 |
4.2 |
35.2 |
3.7 |
16.1 |
100 to 499 lbs |
18.5 |
2.5 |
34.5 |
6.7 |
26.2 |
6.5 |
13.9 |
500 to 749 lbs |
39.2 |
0.5 |
40.7 |
1.6 |
39.1 |
0.7 |
S |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
S |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
33.2 |
10,000 to 49,999 lbs |
49.7 |
4.3 |
S |
S |
S |
S |
14.5 |
50,000 to 99,999 lbs |
– |
– |
– |
– |
– |
– |
– |
100,000 lbs or more |
49.4 |
0.8 |
S |
S |
S |
S |
33.6 |
Parcel, USPS or courier
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
13.4 |
– |
31.4 |
– |
24.1 |
– |
7.5 |
Less than 50 lbs |
16.8 |
5.5 |
31.0 |
5.3 |
28.6 |
4.7 |
6.1 |
50 to 99 lbs |
23.8 |
2.8 |
48.2 |
2.6 |
35.2 |
2.1 |
16.1 |
100 to 499 lbs |
18.5 |
2.6 |
34.5 |
4.2 |
26.2 |
4.6 |
13.9 |
500 to 749 lbs |
39.2 |
0.6 |
40.7 |
2.0 |
39.1 |
1.3 |
S |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
S |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
S |
10,000 to 49,999 lbs |
– |
– |
– |
– |
– |
– |
– |
50,000 to 99,999 lbs |
– |
– |
– |
– |
– |
– |
– |
100,000 lbs or more |
– |
– |
– |
– |
– |
– |
– |
All other multiple modes
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
37.5 |
– |
S |
S |
S |
S |
16.8 |
Less than 50 lbs |
S |
S |
S |
S |
S |
S |
31.6 |
50 to 99 lbs |
– |
– |
– |
– |
– |
– |
– |
100 to 499 lbs |
– |
– |
– |
– |
– |
– |
– |
500 to 749 lbs |
– |
– |
– |
– |
– |
– |
– |
750 to 999 lbs |
– |
– |
– |
– |
– |
– |
– |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
32.4 |
10,000 to 49,999 lbs |
49.7 |
12.2 |
S |
S |
S |
S |
14.5 |
50,000 to 99,999 lbs |
– |
– |
– |
– |
– |
– |
– |
100,000 lbs or more |
49.4 |
5.0 |
S |
S |
S |
S |
33.6 |
Other and unknown modes
Shipment Weight |
Value |
Tons |
Ton-miles |
CV of average miles per shipment |
---|
CV |
Std. error of percent |
CV |
Std. error of percent |
CV |
Std. error of percent |
---|
All shipment sizes |
25.4 |
– |
36.5 |
– |
38.8 |
– |
32.6 |
Less than 50 lbs |
S |
S |
47.6 |
1.1 |
S |
S |
34.3 |
50 to 99 lbs |
S |
S |
36.3 |
0.8 |
S |
S |
S |
100 to 499 lbs |
S |
S |
34.7 |
3.8 |
40.7 |
1.1 |
S |
500 to 749 lbs |
S |
S |
S |
S |
S |
S |
S |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
36.5 |
1,000 to 9,999 lbs |
27.2 |
11.0 |
22.3 |
12.2 |
24.2 |
12.4 |
S |
10,000 to 49,999 lbs |
40.7 |
8.0 |
48.9 |
8.2 |
37.4 |
7.9 |
S |
50,000 to 99,999 lbs |
44.6 |
3.3 |
S |
S |
44.4 |
4.9 |
S |
100,000 lbs or more |
S |
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.