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]
Excel | CSV
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 |
8.0 |
– |
22.3 |
– |
26.2 |
– |
10.7 |
Less than 50 lbs |
13.6 |
2.0 |
12.8 |
– |
13.2 |
0.2 |
12.4 |
50 to 99 lbs |
23.2 |
1.9 |
15.4 |
– |
25.8 |
0.2 |
14.7 |
100 to 499 lbs |
14.5 |
1.6 |
11.4 |
0.2 |
10.9 |
0.3 |
16.9 |
500 to 749 lbs |
14.3 |
0.3 |
22.7 |
0.2 |
15.2 |
0.2 |
25.7 |
750 to 999 lbs |
19.8 |
0.5 |
28.0 |
0.1 |
11.9 |
– |
39.1 |
1,000 to 9,999 lbs |
10.2 |
2.0 |
21.9 |
1.8 |
18.7 |
2.3 |
29.4 |
10,000 to 49,999 lbs |
19.0 |
4.8 |
19.7 |
4.4 |
29.1 |
8.6 |
10.2 |
50,000 to 99,999 lbs |
19.9 |
0.4 |
24.3 |
4.9 |
S |
S |
24.4 |
100,000 lbs or more |
31.9 |
0.6 |
S |
S |
S |
S |
37.2 |
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 |
9.2 |
– |
22.2 |
– |
26.7 |
– |
26.7 |
Less than 50 lbs |
19.6 |
2.3 |
18.6 |
– |
34.2 |
– |
40.7 |
50 to 99 lbs |
30.6 |
2.1 |
20.2 |
– |
42.4 |
0.1 |
27.6 |
100 to 499 lbs |
18.1 |
2.2 |
15.6 |
0.2 |
13.2 |
0.1 |
20.5 |
500 to 749 lbs |
15.4 |
0.4 |
25.1 |
0.2 |
16.9 |
0.2 |
20.8 |
750 to 999 lbs |
12.7 |
0.4 |
31.1 |
0.1 |
13.9 |
– |
43.0 |
1,000 to 9,999 lbs |
10.9 |
2.3 |
23.0 |
1.8 |
16.1 |
2.1 |
32.7 |
10,000 to 49,999 lbs |
19.8 |
5.2 |
19.7 |
4.4 |
31.4 |
8.8 |
12.1 |
50,000 to 99,999 lbs |
19.9 |
0.5 |
24.4 |
4.9 |
S |
S |
24.5 |
100,000 lbs or more |
32.0 |
0.7 |
S |
S |
S |
S |
37.7 |
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 |
9.3 |
– |
11.5 |
– |
26.0 |
– |
25.0 |
Less than 50 lbs |
23.0 |
2.3 |
21.8 |
– |
40.9 |
– |
33.6 |
50 to 99 lbs |
31.7 |
2.1 |
20.9 |
– |
S |
S |
33.2 |
100 to 499 lbs |
18.5 |
2.2 |
15.8 |
0.2 |
14.3 |
0.2 |
22.6 |
500 to 749 lbs |
12.7 |
0.4 |
24.6 |
0.2 |
12.4 |
0.1 |
23.6 |
750 to 999 lbs |
15.0 |
0.4 |
31.4 |
0.2 |
16.0 |
0.1 |
30.4 |
1,000 to 9,999 lbs |
10.8 |
2.3 |
23.0 |
1.9 |
16.0 |
2.0 |
31.7 |
10,000 to 49,999 lbs |
20.0 |
5.6 |
19.9 |
5.6 |
32.7 |
5.5 |
12.2 |
50,000 to 99,999 lbs |
22.5 |
0.6 |
24.6 |
4.4 |
S |
S |
26.0 |
100,000 lbs or more |
S |
S |
35.6 |
1.4 |
30.4 |
0.6 |
S |
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 |
38.5 |
– |
S |
S |
S |
S |
17.5 |
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 |
– |
– |
– |
– |
– |
– |
– |
10,000 to 49,999 lbs |
39.7 |
11.8 |
40.8 |
10.4 |
46.5 |
10.3 |
20.2 |
50,000 to 99,999 lbs |
S |
S |
S |
S |
S |
S |
31.2 |
100,000 lbs or more |
38.4 |
12.5 |
S |
S |
S |
S |
19.6 |
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 |
23.0 |
– |
S |
S |
S |
S |
9.4 |
Less than 50 lbs |
47.9 |
11.7 |
S |
S |
S |
S |
7.4 |
50 to 99 lbs |
43.8 |
3.2 |
S |
S |
S |
S |
22.1 |
100 to 499 lbs |
39.8 |
4.9 |
45.0 |
5.0 |
45.9 |
5.5 |
16.6 |
500 to 749 lbs |
S |
S |
S |
S |
S |
S |
28.9 |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
33.4 |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
22.3 |
10,000 to 49,999 lbs |
S |
S |
S |
S |
S |
S |
31.6 |
50,000 to 99,999 lbs |
S |
S |
S |
S |
S |
S |
31.6 |
100,000 lbs or more |
S |
S |
S |
S |
S |
S |
S |
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 |
11.6 |
– |
30.6 |
– |
47.5 |
– |
7.6 |
Less than 50 lbs |
13.7 |
5.1 |
15.5 |
5.7 |
16.1 |
7.9 |
8.0 |
50 to 99 lbs |
16.0 |
1.9 |
18.0 |
4.1 |
23.5 |
5.8 |
9.7 |
100 to 499 lbs |
22.4 |
3.3 |
25.0 |
4.8 |
26.6 |
5.8 |
10.9 |
500 to 749 lbs |
40.7 |
0.7 |
37.4 |
1.3 |
42.7 |
1.3 |
24.7 |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
49.4 |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
28.3 |
10,000 to 49,999 lbs |
43.3 |
3.5 |
S |
S |
S |
S |
23.9 |
50,000 to 99,999 lbs |
– |
– |
– |
– |
– |
– |
– |
100,000 lbs or more |
– |
– |
– |
– |
– |
– |
– |
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 |
14.0 |
– |
17.4 |
– |
20.7 |
– |
7.7 |
Less than 50 lbs |
13.8 |
4.5 |
15.5 |
3.4 |
16.2 |
4.4 |
8.0 |
50 to 99 lbs |
16.0 |
1.4 |
18.0 |
1.5 |
23.5 |
2.9 |
9.7 |
100 to 499 lbs |
22.4 |
3.5 |
25.0 |
4.1 |
26.9 |
3.6 |
11.1 |
500 to 749 lbs |
40.7 |
0.9 |
37.4 |
1.7 |
42.7 |
1.5 |
24.7 |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
30.1 |
1,000 to 9,999 lbs |
S |
S |
S |
S |
S |
S |
31.6 |
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 |
40.9 |
– |
S |
S |
S |
S |
23.3 |
Less than 50 lbs |
S |
S |
S |
S |
S |
S |
31.5 |
50 to 99 lbs |
S |
S |
S |
S |
S |
S |
35.5 |
100 to 499 lbs |
S |
S |
S |
S |
S |
S |
37.4 |
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 |
29.9 |
10,000 to 49,999 lbs |
43.3 |
9.7 |
S |
S |
S |
S |
23.9 |
50,000 to 99,999 lbs |
– |
– |
– |
– |
– |
– |
– |
100,000 lbs or more |
– |
– |
– |
– |
– |
– |
– |
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 |
31.4 |
– |
S |
S |
S |
S |
23.9 |
Less than 50 lbs |
S |
S |
S |
S |
S |
S |
28.1 |
50 to 99 lbs |
40.8 |
1.9 |
S |
S |
S |
S |
31.1 |
100 to 499 lbs |
45.6 |
3.7 |
32.2 |
3.8 |
S |
S |
30.0 |
500 to 749 lbs |
S |
S |
S |
S |
S |
S |
S |
750 to 999 lbs |
S |
S |
S |
S |
S |
S |
30.8 |
1,000 to 9,999 lbs |
S |
S |
47.3 |
12.6 |
S |
S |
28.8 |
10,000 to 49,999 lbs |
S |
S |
S |
S |
S |
S |
20.1 |
50,000 to 99,999 lbs |
S |
S |
S |
S |
S |
S |
30.8 |
100,000 lbs or more |
S |
S |
S |
S |
S |
S |
31.7 |
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.