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 |
7.3 |
– |
17.0 |
– |
15.4 |
– |
17.0 |
Less than 50 lbs |
9.9 |
1.3 |
8.9 |
– |
27.0 |
– |
17.6 |
50 to 99 lbs |
17.6 |
0.4 |
26.6 |
– |
16.5 |
– |
26.7 |
100 to 499 lbs |
20.3 |
1.4 |
28.9 |
– |
19.6 |
– |
28.1 |
500 to 749 lbs |
38.1 |
1.0 |
26.2 |
– |
22.1 |
– |
33.3 |
750 to 999 lbs |
17.2 |
0.2 |
33.9 |
– |
23.8 |
– |
S |
1,000 to 9,999 lbs |
23.8 |
3.2 |
40.8 |
1.7 |
11.6 |
0.7 |
S |
10,000 to 49,999 lbs |
11.0 |
2.9 |
22.7 |
2.9 |
10.1 |
4.7 |
18.2 |
50,000 to 99,999 lbs |
16.6 |
1.6 |
20.2 |
3.0 |
16.6 |
4.0 |
18.5 |
100,000 lbs or more |
14.1 |
1.0 |
18.5 |
4.2 |
28.5 |
7.8 |
17.1 |
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 |
7.3 |
– |
16.5 |
– |
15.5 |
– |
21.0 |
Less than 50 lbs |
15.4 |
1.1 |
11.7 |
– |
34.3 |
– |
20.2 |
50 to 99 lbs |
16.0 |
0.3 |
18.4 |
– |
19.7 |
– |
37.4 |
100 to 499 lbs |
24.9 |
1.6 |
31.6 |
– |
23.2 |
– |
33.3 |
500 to 749 lbs |
41.8 |
1.3 |
28.7 |
– |
22.0 |
– |
48.1 |
750 to 999 lbs |
17.8 |
0.2 |
34.8 |
– |
25.2 |
– |
S |
1,000 to 9,999 lbs |
16.6 |
2.7 |
42.0 |
1.7 |
11.7 |
0.7 |
S |
10,000 to 49,999 lbs |
12.0 |
2.7 |
23.4 |
2.8 |
9.8 |
4.8 |
20.5 |
50,000 to 99,999 lbs |
16.6 |
2.1 |
20.2 |
3.1 |
16.3 |
4.0 |
18.6 |
100,000 lbs or more |
15.6 |
1.1 |
18.6 |
4.4 |
29.0 |
7.9 |
16.1 |
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 |
6.8 |
– |
19.9 |
– |
9.3 |
– |
16.6 |
Less than 50 lbs |
28.9 |
1.1 |
12.9 |
– |
S |
S |
39.5 |
50 to 99 lbs |
15.0 |
0.2 |
20.1 |
– |
24.8 |
– |
25.5 |
100 to 499 lbs |
19.7 |
0.8 |
31.7 |
0.1 |
23.5 |
0.1 |
34.8 |
500 to 749 lbs |
42.6 |
1.4 |
28.6 |
– |
20.9 |
– |
49.0 |
750 to 999 lbs |
17.7 |
0.2 |
34.8 |
– |
25.1 |
– |
S |
1,000 to 9,999 lbs |
14.3 |
2.7 |
42.1 |
1.8 |
11.5 |
0.7 |
S |
10,000 to 49,999 lbs |
10.6 |
3.0 |
23.4 |
3.4 |
10.0 |
5.2 |
20.5 |
50,000 to 99,999 lbs |
16.6 |
2.3 |
20.3 |
2.6 |
16.8 |
4.4 |
19.0 |
100,000 lbs or more |
42.1 |
1.0 |
39.6 |
2.1 |
S |
S |
25.4 |
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 |
33.4 |
– |
22.8 |
– |
27.7 |
– |
13.7 |
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 |
29.7 |
10,000 to 49,999 lbs |
S |
S |
36.5 |
– |
36.9 |
0.3 |
25.3 |
50,000 to 99,999 lbs |
S |
S |
S |
S |
S |
S |
28.2 |
100,000 lbs or more |
16.1 |
10.1 |
22.9 |
0.5 |
27.9 |
0.8 |
15.4 |
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 |
26.1 |
– |
S |
S |
S |
S |
5.9 |
Less than 50 lbs |
26.3 |
11.1 |
24.3 |
11.0 |
23.9 |
11.4 |
5.5 |
50 to 99 lbs |
46.1 |
3.1 |
37.9 |
6.6 |
39.1 |
8.5 |
9.8 |
100 to 499 lbs |
S |
S |
31.7 |
6.3 |
32.1 |
5.6 |
9.7 |
500 to 749 lbs |
S |
S |
S |
S |
S |
S |
28.6 |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
29.9 |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
22.0 |
10,000 to 49,999 lbs |
S |
S |
S |
S |
S |
S |
30.0 |
50,000 to 99,999 lbs |
– |
– |
– |
– |
– |
– |
– |
100,000 lbs or more |
S |
S |
S |
S |
S |
S |
30.5 |
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 |
16.1 |
– |
S |
S |
S |
S |
14.9 |
Less than 50 lbs |
12.0 |
5.4 |
18.7 |
8.5 |
28.3 |
8.7 |
14.9 |
50 to 99 lbs |
39.1 |
4.2 |
S |
S |
25.6 |
4.5 |
S |
100 to 499 lbs |
29.1 |
3.3 |
23.0 |
6.1 |
26.3 |
6.5 |
16.6 |
500 to 749 lbs |
43.2 |
0.2 |
S |
S |
49.0 |
0.1 |
S |
750 to 999 lbs |
40.1 |
0.2 |
35.5 |
1.2 |
45.6 |
1.4 |
32.3 |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
31.6 |
10,000 to 49,999 lbs |
S |
S |
S |
S |
S |
S |
23.4 |
50,000 to 99,999 lbs |
S |
S |
S |
S |
S |
S |
27.9 |
100,000 lbs or more |
S |
S |
S |
S |
S |
S |
26.1 |
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 |
15.7 |
– |
24.4 |
– |
18.5 |
– |
14.9 |
Less than 50 lbs |
12.0 |
6.0 |
18.7 |
6.2 |
28.3 |
8.0 |
14.9 |
50 to 99 lbs |
39.1 |
4.8 |
S |
S |
25.6 |
4.3 |
S |
100 to 499 lbs |
29.1 |
3.3 |
23.0 |
4.1 |
26.3 |
4.7 |
16.6 |
500 to 749 lbs |
43.2 |
0.2 |
S |
S |
49.0 |
0.8 |
S |
750 to 999 lbs |
43.2 |
0.2 |
40.6 |
1.2 |
46.4 |
1.4 |
23.7 |
1,000 to 9,999 lbs |
– |
– |
– |
– |
– |
– |
– |
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 |
S |
S |
S |
S |
S |
S |
S |
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 |
S |
S |
S |
S |
S |
S |
31.6 |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
31.6 |
10,000 to 49,999 lbs |
S |
S |
S |
S |
S |
S |
23.4 |
50,000 to 99,999 lbs |
S |
S |
S |
S |
S |
S |
27.9 |
100,000 lbs or more |
S |
S |
S |
S |
S |
S |
26.1 |
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 |
40.3 |
– |
28.7 |
– |
36.7 |
– |
27.6 |
Less than 50 lbs |
34.4 |
8.2 |
26.9 |
3.9 |
30.3 |
1.5 |
31.7 |
50 to 99 lbs |
31.0 |
2.4 |
33.0 |
3.8 |
S |
S |
32.5 |
100 to 499 lbs |
S |
S |
40.3 |
2.0 |
S |
S |
39.3 |
500 to 749 lbs |
S |
S |
48.3 |
0.4 |
S |
S |
42.8 |
750 to 999 lbs |
45.8 |
0.1 |
S |
S |
S |
S |
S |
1,000 to 9,999 lbs |
S |
S |
35.1 |
5.4 |
43.4 |
8.6 |
S |
10,000 to 49,999 lbs |
S |
S |
40.7 |
10.3 |
S |
S |
41.0 |
50,000 to 99,999 lbs |
S |
S |
S |
S |
S |
S |
45.3 |
100,000 lbs or more |
S |
S |
S |
S |
S |
S |
30.9 |
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.