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 |
12.7 |
– |
14.2 |
– |
13.9 |
– |
28.0 |
---|
Single modes |
14.3 |
3.8 |
18.8 |
6.8 |
16.4 |
4.6 |
36.9 |
---|
Truck |
14.7 |
4.5 |
19.2 |
6.6 |
15.5 |
4.7 |
13.0 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
44.6 |
1.1 |
S |
S |
S |
S |
26.9 |
Multiple modes |
23.6 |
3.1 |
26.3 |
7.1 |
14.9 |
4.7 |
41.6 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
32.2 |
All other multiple modes |
29.6 |
3.5 |
26.3 |
7.1 |
15.0 |
4.8 |
S |
Other and unknown modes |
48.5 |
1.2 |
S |
S |
S |
S |
S |
---|
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 |
39.1 |
– |
38.1 |
– |
S |
S |
S |
---|
Single modes |
36.4 |
9.6 |
48.9 |
9.7 |
S |
S |
S |
---|
Truck |
37.3 |
11.5 |
49.5 |
12.7 |
S |
S |
25.6 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
30.1 |
Multiple modes |
S |
S |
S |
S |
S |
S |
29.4 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
41.3 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
31.2 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
31.6 |
---|
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 |
29.1 |
– |
30.7 |
– |
41.8 |
– |
S |
---|
Single modes |
33.0 |
11.7 |
40.6 |
12.4 |
S |
S |
39.7 |
---|
Truck |
35.1 |
12.9 |
45.4 |
14.0 |
S |
S |
21.3 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
29.1 |
Multiple modes |
48.5 |
8.4 |
41.0 |
9.5 |
S |
S |
S |
---|
Parcel, USPS or courier |
– |
– |
– |
– |
– |
– |
– |
All other multiple modes |
48.5 |
8.4 |
41.0 |
9.5 |
S |
S |
S |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
31.6 |
---|
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 |
19.7 |
– |
20.8 |
– |
41.2 |
– |
S |
---|
Single modes |
24.1 |
11.1 |
24.0 |
9.3 |
S |
S |
7.2 |
---|
Truck |
24.1 |
11.1 |
24.0 |
9.3 |
S |
S |
7.2 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
Multiple modes |
47.5 |
11.4 |
44.1 |
9.6 |
S |
S |
25.8 |
---|
Parcel, USPS or courier |
– |
– |
– |
– |
– |
– |
– |
All other multiple modes |
47.5 |
11.4 |
44.1 |
9.6 |
S |
S |
25.8 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
31.6 |
---|
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 |
22.0 |
– |
19.6 |
– |
S |
S |
S |
---|
Single modes |
22.5 |
4.3 |
20.7 |
4.5 |
21.7 |
19.2 |
19.1 |
---|
Truck |
22.5 |
4.3 |
20.7 |
4.5 |
21.7 |
19.2 |
19.1 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
Multiple modes |
47.1 |
4.3 |
48.1 |
4.5 |
S |
S |
26.4 |
---|
Parcel, USPS or courier |
– |
– |
– |
– |
– |
– |
– |
All other multiple modes |
47.1 |
4.3 |
48.1 |
4.5 |
S |
S |
26.4 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
31.6 |
---|
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 |
34.6 |
– |
28.7 |
– |
S |
S |
30.0 |
---|
Single modes |
35.3 |
5.3 |
29.7 |
8.0 |
S |
S |
31.4 |
---|
Truck |
35.6 |
9.5 |
30.5 |
11.1 |
S |
S |
22.2 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
30.9 |
Multiple modes |
34.1 |
5.6 |
S |
S |
S |
S |
31.2 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
31.1 |
All other multiple modes |
41.5 |
5.9 |
S |
S |
S |
S |
23.2 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
34.0 |
---|
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 |
43.8 |
– |
27.8 |
– |
S |
S |
35.5 |
---|
Single modes |
35.0 |
11.9 |
34.3 |
12.4 |
S |
S |
38.2 |
---|
Truck |
33.7 |
14.6 |
36.2 |
13.1 |
S |
S |
21.9 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
31.6 |
Multiple modes |
S |
S |
S |
S |
S |
S |
34.1 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
30.1 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
49.9 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
S |
---|
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 |
21.4 |
– |
18.2 |
– |
S |
S |
15.1 |
---|
Single modes |
23.2 |
4.4 |
18.3 |
8.2 |
23.1 |
19.8 |
11.3 |
---|
Truck |
22.7 |
4.5 |
18.3 |
8.2 |
23.1 |
19.8 |
9.0 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
31.6 |
Multiple modes |
35.8 |
4.5 |
S |
S |
S |
S |
17.4 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
32.1 |
All other multiple modes |
35.8 |
4.5 |
S |
S |
S |
S |
17.1 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
31.6 |
---|
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 |
S |
S |
S |
S |
29.8 |
---|
Single modes |
S |
S |
S |
S |
S |
S |
30.4 |
---|
Truck |
S |
S |
S |
S |
S |
S |
30.4 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
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 |
S |
S |
S |
S |
S |
S |
31.6 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
31.6 |
---|
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 |
S |
S |
S |
S |
S |
S |
45.2 |
---|
Single modes |
S |
S |
S |
S |
S |
S |
18.5 |
---|
Truck |
S |
S |
S |
S |
S |
S |
19.0 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
32.4 |
Multiple modes |
S |
S |
S |
S |
S |
S |
35.3 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
34.6 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
22.9 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
34.0 |
---|
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 |
S |
S |
S |
S |
S |
S |
S |
---|
Single modes |
S |
S |
S |
S |
S |
S |
S |
---|
Truck |
S |
S |
S |
S |
S |
S |
S |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
Multiple modes |
– |
– |
– |
– |
– |
– |
– |
---|
Parcel, USPS or courier |
– |
– |
– |
– |
– |
– |
– |
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.