Table B-7a. Estimated Measures of Reliability for Export Shipment Characteristics by Commodity Group and Export Mode: 2002
Monday, July 2, 2012
Table B-7a. Estimated Measures of Reliability for Export Shipment Characteristics by Commodity Group and Export Mode: 2002
[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]
Excel | CSV
All Commodities
All modes |
4.9 |
– |
11.8 |
– |
Single modes |
4.1 |
1.3 |
12.4 |
1.0 |
Truck |
6.4 |
1.9 |
6.5 |
1.6 |
Rail |
8.9 |
0.3 |
16.2 |
1.9 |
Water |
6.2 |
1.0 |
15.9 |
3.2 |
Air (including truck and air) |
7.5 |
1.3 |
11.2 |
0.2 |
Pipeline |
S |
S |
S |
S |
Multiple modes |
18.2 |
1.5 |
14.7 |
0.9 |
Parcel, U.S.P.S. or courier |
11.0 |
0.5 |
31.4 |
– |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
27.7 |
1.5 |
15.2 |
0.9 |
Other and unknown modes |
13.8 |
0.3 |
28.6 |
0.4 |
SCTG 01-05, Agriculture products and fish
All modes |
14.1 |
0.9 |
17.4 |
3.9 |
Single modes |
13.9 |
0.9 |
17.7 |
3.7 |
Truck |
25.8 |
0.3 |
19.1 |
0.4 |
Rail |
28.9 |
– |
26.4 |
0.7 |
Water |
16.5 |
0.8 |
19.0 |
3.9 |
Air (including truck and air) |
S |
S |
S |
S |
Pipeline |
– |
– |
– |
– |
Multiple modes |
25.3 |
– |
38.7 |
0.3 |
Parcel, U.S.P.S. or courier |
S |
S |
S |
S |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
26.1 |
– |
38.7 |
0.3 |
Other and unknown modes |
27.5 |
– |
46.7 |
0.3 |
SCTG 06-09, Grains, alcohol, and tobacco products
All modes |
18.3 |
0.3 |
13.8 |
0.6 |
Single modes |
19.8 |
0.3 |
14.0 |
0.6 |
Truck |
14.2 |
– |
21.0 |
0.3 |
Rail |
23.4 |
– |
16.7 |
0.1 |
Water |
25.4 |
0.3 |
16.5 |
0.3 |
Air (including truck and air) |
S |
S |
S |
S |
Pipeline |
S |
S |
S |
S |
Multiple modes |
32.1 |
– |
23.9 |
– |
Parcel, U.S.P.S. or courier |
28.0 |
– |
S |
S |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
32.8 |
– |
23.7 |
– |
Other and unknown modes |
30.2 |
– |
29.8 |
– |
SCTG 10-14, Stones, nonmetallic minerals, and metallic ores
All modes |
16.9 |
0.1 |
23.9 |
1.9 |
Single modes |
13.8 |
– |
23.9 |
1.7 |
Truck |
23.6 |
– |
23.5 |
0.1 |
Rail |
22.6 |
– |
35.3 |
1.1 |
Water |
18.3 |
– |
31.6 |
1.1 |
Air (including truck and air) |
S |
S |
44.7 |
– |
Pipeline |
– |
– |
– |
– |
Multiple modes |
S |
S |
39.8 |
0.3 |
Parcel, U.S.P.S. or courier |
S |
S |
S |
S |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
S |
S |
39.8 |
0.3 |
Other and unknown modes |
41.1 |
– |
42.4 |
– |
SCTG 15-19, Coal and petroleum products
All modes |
31.2 |
0.3 |
24.2 |
2.7 |
Single modes |
32.7 |
0.3 |
24.4 |
2.2 |
Truck |
45.2 |
0.1 |
S |
S |
Rail |
31.7 |
– |
38.5 |
0.4 |
Water |
37.6 |
0.3 |
28.4 |
2.4 |
Air (including truck and air) |
S |
S |
S |
S |
Pipeline |
S |
S |
S |
S |
Multiple modes |
S |
S |
S |
S |
Parcel, U.S.P.S. or courier |
S |
S |
S |
S |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
S |
S |
S |
S |
Other and unknown modes |
47.1 |
– |
S |
S |
SCTG 20-24, Pharmaceutical and chemical products
All modes |
7.2 |
0.9 |
23.2 |
1.6 |
Single modes |
7.3 |
0.8 |
23.9 |
1.6 |
Truck |
11.6 |
0.2 |
16.7 |
0.3 |
Rail |
28.5 |
0.2 |
38.3 |
0.9 |
Water |
8.2 |
0.4 |
40.8 |
1.8 |
Air (including truck and air) |
11.9 |
0.4 |
19.1 |
– |
Pipeline |
S |
S |
S |
S |
Multiple modes |
16.0 |
0.1 |
18.8 |
– |
Parcel, U.S.P.S. or courier |
9.8 |
– |
36.0 |
– |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
18.2 |
0.1 |
19.0 |
– |
Other and unknown modes |
24.2 |
– |
23.1 |
– |
SCTG 25-30, Logs, wood products, and textile and leather
All modes |
7.3 |
0.5 |
11.0 |
0.8 |
Single modes |
8.1 |
0.4 |
10.5 |
0.4 |
Truck |
8.1 |
0.2 |
8.6 |
0.2 |
Rail |
S |
S |
40.6 |
0.3 |
Water |
15.4 |
0.4 |
16.1 |
0.4 |
Air (including truck and air) |
27.2 |
– |
15.8 |
– |
Pipeline |
S |
S |
S |
S |
Multiple modes |
22.5 |
0.2 |
37.6 |
0.5 |
Parcel, U.S.P.S. or courier |
20.7 |
– |
28.2 |
– |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
26.9 |
0.2 |
38.0 |
0.5 |
Other and unknown modes |
20.9 |
– |
15.0 |
– |
SCTG 31-34, Base metal and machinery
All modes |
7.0 |
1.3 |
12.4 |
1.0 |
Single modes |
7.3 |
1.1 |
13.2 |
1.1 |
Truck |
9.9 |
0.7 |
10.9 |
0.4 |
Rail |
25.0 |
– |
21.3 |
0.1 |
Water |
17.5 |
0.6 |
27.7 |
0.9 |
Air (including truck and air) |
12.2 |
0.4 |
17.7 |
– |
Pipeline |
S |
S |
S |
S |
Multiple modes |
10.7 |
0.1 |
26.4 |
0.1 |
Parcel, U.S.P.S. or courier |
15.4 |
0.1 |
33.5 |
– |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
15.2 |
0.1 |
27.4 |
0.1 |
Other and unknown modes |
31.4 |
0.3 |
S |
S |
SCTG 35-38, Electronic, motorized vehicles, and precision instruments
All modes |
8.5 |
2.2 |
10.1 |
0.6 |
Single modes |
7.6 |
2.4 |
11.3 |
0.6 |
Truck |
16.5 |
1.9 |
13.3 |
0.4 |
Rail |
22.2 |
0.3 |
13.2 |
– |
Water |
12.6 |
0.6 |
18.1 |
0.2 |
Air (including truck and air) |
9.6 |
1.4 |
11.4 |
– |
Pipeline |
S |
S |
S |
S |
Multiple modes |
32.1 |
1.6 |
19.0 |
– |
Parcel, U.S.P.S. or courier |
7.5 |
0.3 |
15.7 |
– |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
S |
S |
22.1 |
– |
Other and unknown modes |
36.4 |
0.3 |
33.2 |
– |
SCTG 39-43, Furniture, mixed freight and misc. manufactured products
All modes |
8.2 |
0.6 |
15.4 |
0.5 |
Single modes |
9.6 |
0.4 |
16.7 |
0.5 |
Truck |
11.3 |
0.2 |
15.7 |
0.2 |
Rail |
33.2 |
– |
36.0 |
– |
Water |
15.7 |
0.3 |
21.2 |
0.4 |
Air (including truck and air) |
17.3 |
0.2 |
16.7 |
– |
Pipeline |
S |
S |
S |
S |
Multiple modes |
28.7 |
0.4 |
29.4 |
– |
Parcel, U.S.P.S. or courier |
S |
S |
16.3 |
– |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
21.2 |
0.2 |
30.2 |
– |
Other and unknown modes |
37.7 |
– |
39.1 |
– |
Commodity unknown
All modes |
32.1 |
0.1 |
S |
S |
Single modes |
21.1 |
– |
S |
S |
Truck |
37.9 |
– |
S |
S |
Rail |
S |
S |
S |
S |
Water |
44.7 |
– |
S |
S |
Air (including truck and air) |
41.4 |
– |
S |
S |
Pipeline |
– |
– |
– |
– |
Multiple modes |
S |
S |
S |
S |
Parcel, U.S.P.S. or courier |
S |
S |
S |
S |
Truck and rail |
– |
– |
– |
– |
All other multiple modes |
S |
S |
S |
S |
Other and unknown modes |
S |
S |
S |
S |
KEY:
– Represents an estimate 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 on 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: Research and Innovative Technologies
Administration, Bureau of Transportation Statistics (USDOT) and U.S. Census
Bureau, 2002 Commodity Flow Survey, Export Data, March 2005.