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 |
49.5 |
– |
12.5 |
– |
11.2 |
– |
12.9 |
---|
Single modes |
S |
S |
12.8 |
1.1 |
12.1 |
3.8 |
15.4 |
---|
Truck |
48.0 |
3.8 |
12.6 |
1.1 |
11.0 |
3.9 |
13.0 |
Rail |
S |
S |
S |
S |
S |
S |
S |
All other Single modes |
S |
S |
S |
S |
S |
S |
8.2 |
Multiple modes |
44.4 |
3.4 |
15.4 |
0.3 |
22.4 |
1.7 |
7.0 |
---|
Parcel, USPS or courier |
44.5 |
3.4 |
16.9 |
0.3 |
24.7 |
1.7 |
7.0 |
All other multiple modes |
30.7 |
– |
S |
S |
S |
S |
37.3 |
Other and unknown modes |
40.6 |
0.9 |
29.3 |
1.0 |
S |
S |
48.2 |
---|
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 |
26.5 |
– |
33.4 |
– |
48.2 |
– |
37.1 |
---|
Single modes |
26.5 |
– |
33.4 |
– |
48.2 |
– |
37.7 |
---|
Truck |
26.5 |
0.3 |
33.6 |
0.7 |
S |
S |
43.9 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
31.6 |
Multiple modes |
– |
– |
– |
– |
– |
– |
– |
---|
Parcel, USPS or courier |
– |
– |
– |
– |
– |
– |
– |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
29.8 |
---|
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 |
34.7 |
– |
41.0 |
– |
S |
S |
25.2 |
---|
Single modes |
34.7 |
0.1 |
41.0 |
0.1 |
S |
S |
24.9 |
---|
Truck |
34.7 |
0.1 |
41.0 |
0.1 |
S |
S |
24.9 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
31.6 |
Multiple modes |
S |
S |
S |
S |
S |
S |
41.9 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
41.9 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
28.2 |
---|
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 |
21.8 |
– |
S |
S |
49.8 |
---|
Single modes |
S |
S |
21.4 |
1.2 |
S |
S |
46.9 |
---|
Truck |
S |
S |
21.5 |
1.3 |
48.3 |
1.8 |
47.1 |
Rail |
S |
S |
S |
S |
S |
S |
31.6 |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
Multiple modes |
– |
– |
– |
– |
– |
– |
– |
---|
Parcel, USPS or courier |
– |
– |
– |
– |
– |
– |
– |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
26.5 |
---|
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 |
45.2 |
– |
S |
S |
S |
S |
S |
---|
Single modes |
45.2 |
10.5 |
S |
S |
S |
S |
19.6 |
---|
Truck |
45.2 |
10.5 |
S |
S |
S |
S |
19.6 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
Multiple modes |
S |
S |
S |
S |
S |
S |
30.7 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
30.7 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
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 |
19.7 |
– |
35.7 |
– |
24.3 |
– |
18.6 |
---|
Single modes |
11.2 |
9.8 |
37.4 |
6.9 |
28.3 |
7.3 |
S |
---|
Truck |
13.3 |
8.9 |
40.7 |
8.2 |
28.0 |
10.2 |
S |
Rail |
S |
S |
S |
S |
S |
S |
36.1 |
All other Single modes |
39.6 |
0.7 |
S |
S |
S |
S |
22.8 |
Multiple modes |
S |
S |
33.7 |
4.1 |
38.4 |
2.4 |
19.7 |
---|
Parcel, USPS or courier |
S |
S |
44.5 |
4.1 |
38.9 |
1.4 |
19.5 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
31.0 |
Other and unknown modes |
35.8 |
0.9 |
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 |
21.3 |
– |
14.8 |
– |
15.5 |
– |
13.6 |
---|
Single modes |
26.2 |
7.3 |
16.9 |
4.3 |
17.7 |
6.0 |
38.8 |
---|
Truck |
26.7 |
7.0 |
16.7 |
4.2 |
18.3 |
5.7 |
37.7 |
Rail |
S |
S |
S |
S |
S |
S |
S |
All other Single modes |
39.3 |
0.2 |
48.5 |
– |
S |
S |
33.6 |
Multiple modes |
29.2 |
6.4 |
24.9 |
2.1 |
38.5 |
4.1 |
7.5 |
---|
Parcel, USPS or courier |
29.5 |
6.5 |
26.2 |
2.1 |
39.6 |
4.2 |
7.5 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
S |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
26.1 |
---|
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 |
23.8 |
– |
43.1 |
– |
37.5 |
– |
10.7 |
---|
Single modes |
27.1 |
3.4 |
44.0 |
3.1 |
40.3 |
4.0 |
19.6 |
---|
Truck |
27.9 |
4.3 |
44.1 |
3.2 |
40.7 |
5.1 |
21.3 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
25.9 |
Multiple modes |
21.3 |
3.1 |
26.0 |
1.3 |
28.5 |
2.5 |
13.3 |
---|
Parcel, USPS or courier |
21.7 |
3.0 |
27.0 |
1.2 |
34.2 |
1.6 |
13.4 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
27.9 |
Other and unknown modes |
S |
S |
48.2 |
2.4 |
S |
S |
29.8 |
---|
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 |
46.9 |
– |
S |
S |
13.5 |
---|
Single modes |
S |
S |
47.4 |
3.9 |
S |
S |
17.5 |
---|
Truck |
S |
S |
46.8 |
4.6 |
S |
S |
34.3 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
13.4 |
Multiple modes |
S |
S |
49.0 |
2.0 |
S |
S |
10.3 |
---|
Parcel, USPS or courier |
S |
S |
49.1 |
2.0 |
S |
S |
10.4 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
31.6 |
Other and unknown modes |
S |
S |
49.8 |
2.4 |
S |
S |
S |
---|
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 |
15.1 |
– |
19.7 |
– |
17.9 |
– |
13.3 |
---|
Single modes |
21.3 |
6.7 |
20.0 |
3.0 |
22.6 |
7.0 |
14.6 |
---|
Truck |
21.3 |
6.7 |
20.0 |
3.0 |
22.5 |
7.0 |
14.8 |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
31.3 |
– |
S |
S |
S |
S |
26.1 |
Multiple modes |
23.3 |
5.8 |
20.5 |
1.7 |
27.2 |
6.6 |
10.9 |
---|
Parcel, USPS or courier |
23.4 |
5.8 |
20.6 |
1.7 |
28.0 |
6.6 |
10.9 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
36.8 |
Other and unknown modes |
S |
S |
S |
S |
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 |
S |
S |
S |
S |
S |
S |
28.6 |
---|
Single modes |
S |
S |
S |
S |
S |
S |
33.0 |
---|
Truck |
S |
S |
S |
S |
S |
S |
S |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
30.0 |
Multiple modes |
S |
S |
S |
S |
S |
S |
28.2 |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
28.2 |
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.