Table B-6. Estimated Measures of Reliability for Shipment Characteristics by Commodity Group and Mode of Transportation for CBSA of Origin: 2002
Monday, July 2, 2012
Table B-6. Estimated Measures of Reliability for Shipment Characteristics by Commodity Group and Mode of Transportation 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 Commodities
Mode of transportation |
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 modes |
21.1 |
– |
9.2 |
– |
25.2 |
– |
8.4 |
---|
Single modes |
22.6 |
1.1 |
9.1 |
0.8 |
23.6 |
2.2 |
10.1 |
---|
Truck |
18.4 |
2.0 |
8.1 |
5.2 |
7.9 |
6.7 |
10.0 |
Rail |
S |
S |
44.3 |
4.3 |
49.5 |
6.7 |
11.3 |
All other Single modes |
18.5 |
1.1 |
22.1 |
3.5 |
28.3 |
2.6 |
10.6 |
Multiple modes |
12.2 |
0.8 |
45.3 |
0.7 |
S |
S |
7.6 |
---|
Parcel, USPS or courier |
13.4 |
0.7 |
31.4 |
– |
24.1 |
0.2 |
7.5 |
All other multiple modes |
37.5 |
0.3 |
S |
S |
S |
S |
16.8 |
Other and unknown modes |
25.4 |
0.4 |
36.5 |
0.4 |
38.8 |
0.4 |
32.6 |
---|
SCTG 01-05, Agriculture products and fish
Mode of transportation |
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 modes |
31.0 |
– |
48.4 |
– |
S |
S |
27.9 |
---|
Single modes |
31.5 |
2.8 |
49.6 |
4.4 |
S |
S |
26.7 |
---|
Truck |
37.8 |
10.2 |
42.3 |
14.3 |
37.0 |
18.1 |
23.5 |
Rail |
S |
S |
S |
S |
S |
S |
29.0 |
All other Single modes |
S |
S |
S |
S |
S |
S |
31.6 |
Multiple modes |
S |
S |
S |
S |
S |
S |
31.6 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
31.6 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
S |
---|
SCTG 06-09, Grains, alcohol, and tobacco products
Mode of transportation |
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 modes |
18.8 |
– |
26.1 |
– |
48.0 |
– |
S |
---|
Single modes |
16.0 |
1.7 |
23.6 |
1.7 |
34.1 |
7.1 |
S |
---|
Truck |
16.5 |
2.0 |
26.9 |
4.9 |
38.8 |
10.2 |
S |
Rail |
27.0 |
1.5 |
29.7 |
5.0 |
34.7 |
10.3 |
21.3 |
All other Single modes |
S |
S |
S |
S |
S |
S |
31.6 |
Multiple modes |
S |
S |
S |
S |
S |
S |
30.8 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
30.2 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
31.6 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
39.4 |
---|
SCTG 10-14, Stones, non-metallic minerals, and metallic ores
Mode of transportation |
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 modes |
S |
S |
26.9 |
– |
29.3 |
– |
21.8 |
---|
Single modes |
S |
S |
27.2 |
1.4 |
29.5 |
0.6 |
22.7 |
---|
Truck |
S |
S |
29.6 |
5.1 |
29.1 |
10.0 |
22.2 |
Rail |
S |
S |
S |
S |
S |
S |
33.0 |
All other Single modes |
S |
S |
S |
S |
S |
S |
30.4 |
Multiple modes |
S |
S |
S |
S |
S |
S |
31.6 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
31.6 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
S |
---|
SCTG 15-19, Coal and petroleum products
Mode of transportation |
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 modes |
17.2 |
– |
18.3 |
– |
30.1 |
– |
43.8 |
---|
Single modes |
18.1 |
2.0 |
18.3 |
2.4 |
24.4 |
7.5 |
31.6 |
---|
Truck |
34.8 |
11.3 |
25.4 |
8.9 |
20.8 |
8.8 |
25.5 |
Rail |
49.5 |
1.5 |
S |
S |
35.9 |
4.0 |
18.2 |
All other Single modes |
21.0 |
10.1 |
22.4 |
7.1 |
29.4 |
7.9 |
20.0 |
Multiple modes |
S |
S |
S |
S |
S |
S |
31.0 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
32.4 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
35.5 |
Other and unknown modes |
40.6 |
1.9 |
40.5 |
1.3 |
40.8 |
1.0 |
23.7 |
---|
SCTG 20-24, Pharmaceutical and chemical products
Mode of transportation |
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 modes |
11.7 |
– |
20.5 |
– |
23.8 |
– |
24.4 |
---|
Single modes |
10.7 |
2.0 |
20.5 |
0.5 |
24.2 |
1.6 |
24.1 |
---|
Truck |
11.0 |
1.9 |
19.4 |
3.3 |
23.5 |
5.2 |
24.7 |
Rail |
30.7 |
1.1 |
32.2 |
3.1 |
33.2 |
5.4 |
18.0 |
All other Single modes |
35.1 |
– |
S |
S |
S |
S |
16.6 |
Multiple modes |
S |
S |
46.4 |
0.5 |
S |
S |
S |
---|
Parcel, USPS or courier |
S |
S |
34.9 |
0.2 |
31.6 |
0.2 |
S |
All other multiple modes |
S |
S |
S |
S |
S |
S |
26.2 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
S |
---|
SCTG 25-30, Logs, wood products, and textile and leather
Mode of transportation |
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 modes |
11.8 |
– |
27.5 |
– |
21.2 |
– |
13.3 |
---|
Single modes |
13.4 |
4.6 |
28.3 |
3.2 |
21.8 |
2.3 |
21.0 |
---|
Truck |
13.7 |
4.7 |
28.6 |
3.4 |
22.6 |
3.8 |
21.4 |
Rail |
27.4 |
0.5 |
34.5 |
1.1 |
32.4 |
2.5 |
22.5 |
All other Single modes |
S |
S |
S |
S |
S |
S |
29.0 |
Multiple modes |
28.8 |
2.3 |
34.3 |
0.4 |
28.6 |
0.8 |
5.0 |
---|
Parcel, USPS or courier |
28.8 |
2.3 |
34.3 |
0.4 |
28.6 |
0.8 |
5.0 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
30.3 |
---|
SCTG 31-34, Base metal and machinery
Mode of transportation |
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 modes |
11.3 |
– |
22.4 |
– |
25.9 |
– |
9.1 |
---|
Single modes |
11.9 |
1.4 |
22.2 |
0.7 |
26.0 |
1.5 |
13.2 |
---|
Truck |
11.7 |
2.0 |
21.0 |
3.3 |
15.1 |
5.6 |
12.6 |
Rail |
21.5 |
1.2 |
36.4 |
2.9 |
S |
S |
14.0 |
All other Single modes |
47.5 |
0.3 |
S |
S |
S |
S |
14.5 |
Multiple modes |
28.6 |
1.1 |
S |
S |
44.8 |
1.0 |
11.1 |
---|
Parcel, USPS or courier |
33.4 |
1.2 |
S |
S |
S |
S |
10.3 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
24.5 |
Other and unknown modes |
26.8 |
0.5 |
S |
S |
S |
S |
S |
---|
SCTG 35-38, Electronic, motorized vehicles, and precision instruments
Mode of transportation |
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 modes |
S |
S |
44.3 |
– |
S |
S |
19.4 |
---|
Single modes |
S |
S |
44.7 |
0.8 |
S |
S |
33.5 |
---|
Truck |
S |
S |
37.2 |
4.5 |
40.3 |
7.3 |
34.7 |
Rail |
S |
S |
S |
S |
S |
S |
20.3 |
All other Single modes |
S |
S |
31.3 |
– |
35.8 |
– |
9.7 |
Multiple modes |
22.2 |
2.4 |
24.9 |
0.6 |
32.2 |
1.3 |
9.7 |
---|
Parcel, USPS or courier |
26.0 |
2.4 |
36.3 |
0.3 |
38.0 |
0.3 |
9.6 |
All other multiple modes |
47.1 |
0.3 |
40.5 |
0.4 |
S |
S |
37.9 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
29.1 |
---|
SCTG 39-43, Furniture, mixed freight and misc manufactured products
Mode of transportation |
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 modes |
10.8 |
– |
24.3 |
– |
14.8 |
– |
10.7 |
---|
Single modes |
12.1 |
1.9 |
24.5 |
0.3 |
14.4 |
0.5 |
14.6 |
---|
Truck |
12.7 |
3.0 |
28.5 |
8.6 |
16.2 |
3.6 |
14.5 |
Rail |
S |
S |
S |
S |
S |
S |
S |
All other Single modes |
47.1 |
– |
S |
S |
S |
S |
43.2 |
Multiple modes |
16.0 |
2.0 |
34.2 |
0.2 |
37.5 |
0.5 |
10.5 |
---|
Parcel, USPS or courier |
16.0 |
2.0 |
34.2 |
0.2 |
37.5 |
0.5 |
10.5 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
34.6 |
0.6 |
36.8 |
– |
S |
S |
S |
---|
Commodity Unknown
Mode of transportation |
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 modes |
39.7 |
– |
29.1 |
– |
41.0 |
– |
S |
---|
Single modes |
40.9 |
10.3 |
29.1 |
0.9 |
41.1 |
2.0 |
S |
---|
Truck |
S |
S |
35.2 |
9.9 |
S |
S |
S |
Rail |
S |
S |
S |
S |
S |
S |
31.6 |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
Multiple modes |
S |
S |
S |
S |
S |
S |
48.5 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
48.5 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
– |
– |
– |
– |
– |
– |
– |
---|
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.