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 |
7.3 |
– |
17.0 |
– |
15.4 |
– |
17.0 |
---|
Single modes |
7.3 |
2.4 |
16.5 |
0.8 |
15.5 |
1.1 |
21.0 |
---|
Truck |
6.8 |
2.0 |
19.9 |
3.7 |
9.3 |
7.1 |
16.6 |
Rail |
33.4 |
1.8 |
22.8 |
3.8 |
27.7 |
7.6 |
13.7 |
All other Single modes |
26.1 |
1.8 |
S |
S |
S |
S |
5.9 |
Multiple modes |
16.1 |
0.9 |
S |
S |
S |
S |
14.9 |
---|
Parcel, USPS or courier |
15.7 |
0.8 |
24.4 |
– |
18.5 |
– |
14.9 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
S |
Other and unknown modes |
40.3 |
1.9 |
28.7 |
0.8 |
36.7 |
0.6 |
27.6 |
---|
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 |
10.1 |
– |
22.2 |
– |
23.6 |
– |
S |
---|
Single modes |
10.4 |
1.6 |
20.5 |
1.1 |
23.4 |
1.5 |
S |
---|
Truck |
10.3 |
3.2 |
24.8 |
6.7 |
19.4 |
12.6 |
S |
Rail |
23.8 |
3.2 |
28.6 |
6.9 |
33.0 |
12.1 |
S |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
Multiple modes |
S |
S |
S |
S |
S |
S |
30.2 |
---|
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 |
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 |
25.1 |
– |
35.2 |
– |
34.7 |
– |
28.9 |
---|
Single modes |
25.3 |
1.5 |
34.2 |
1.0 |
33.5 |
1.1 |
28.7 |
---|
Truck |
26.6 |
2.8 |
36.9 |
5.3 |
41.4 |
7.7 |
28.4 |
Rail |
25.1 |
2.7 |
26.3 |
5.2 |
22.8 |
8.2 |
12.1 |
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 |
S |
---|
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 |
46.4 |
– |
32.9 |
– |
42.8 |
– |
44.2 |
---|
Single modes |
47.7 |
4.7 |
33.8 |
3.4 |
44.5 |
3.9 |
45.5 |
---|
Truck |
45.6 |
4.4 |
33.6 |
3.4 |
39.3 |
4.6 |
47.2 |
Rail |
S |
S |
S |
S |
S |
S |
30.5 |
All other Single modes |
– |
– |
– |
– |
– |
– |
– |
Multiple modes |
48.8 |
1.6 |
S |
S |
48.5 |
1.6 |
28.1 |
---|
Parcel, USPS or courier |
– |
– |
– |
– |
– |
– |
– |
All other multiple modes |
48.8 |
1.6 |
S |
S |
48.5 |
1.6 |
28.1 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
29.9 |
---|
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 |
24.5 |
– |
25.8 |
– |
27.0 |
– |
43.1 |
---|
Single modes |
25.7 |
3.8 |
25.9 |
1.1 |
27.0 |
– |
42.2 |
---|
Truck |
32.3 |
9.6 |
32.9 |
9.9 |
20.8 |
13.5 |
39.2 |
Rail |
S |
S |
S |
S |
S |
S |
27.9 |
All other Single modes |
S |
S |
S |
S |
S |
S |
30.9 |
Multiple modes |
S |
S |
S |
S |
S |
S |
S |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
S |
S |
S |
All other multiple modes |
S |
S |
S |
S |
S |
S |
31.6 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
30.4 |
---|
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 |
28.0 |
– |
23.7 |
– |
33.7 |
– |
S |
---|
Single modes |
29.1 |
6.6 |
25.0 |
7.5 |
33.9 |
1.9 |
44.6 |
---|
Truck |
29.4 |
6.6 |
26.7 |
6.8 |
37.2 |
7.9 |
S |
Rail |
31.5 |
0.8 |
33.6 |
5.7 |
34.3 |
8.8 |
21.3 |
All other Single modes |
36.4 |
1.0 |
S |
S |
40.9 |
0.3 |
16.9 |
Multiple modes |
43.4 |
4.9 |
S |
S |
S |
S |
S |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
37.7 |
0.5 |
S |
All other multiple modes |
S |
S |
S |
S |
S |
S |
31.6 |
Other and unknown modes |
38.4 |
4.9 |
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 |
S |
S |
21.3 |
– |
36.4 |
– |
14.1 |
---|
Single modes |
S |
S |
22.1 |
2.2 |
38.6 |
3.8 |
17.8 |
---|
Truck |
S |
S |
22.1 |
2.3 |
38.6 |
3.8 |
20.4 |
Rail |
S |
S |
S |
S |
S |
S |
31.6 |
All other Single modes |
S |
S |
44.6 |
– |
43.0 |
– |
20.0 |
Multiple modes |
28.0 |
5.1 |
31.9 |
1.0 |
38.7 |
3.6 |
12.4 |
---|
Parcel, USPS or courier |
28.0 |
5.1 |
31.9 |
1.0 |
38.7 |
3.6 |
12.4 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
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 |
38.2 |
– |
47.3 |
– |
47.7 |
– |
31.2 |
---|
Single modes |
30.6 |
4.7 |
47.4 |
1.3 |
46.4 |
1.1 |
32.7 |
---|
Truck |
29.2 |
4.8 |
46.0 |
4.4 |
42.5 |
7.5 |
34.9 |
Rail |
S |
S |
S |
S |
S |
S |
30.4 |
All other Single modes |
S |
S |
S |
S |
S |
S |
6.9 |
Multiple modes |
32.1 |
2.4 |
S |
S |
S |
S |
24.6 |
---|
Parcel, USPS or courier |
32.4 |
2.4 |
45.0 |
1.0 |
40.0 |
0.6 |
24.1 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
49.9 |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
46.3 |
---|
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 |
13.6 |
– |
40.1 |
– |
29.2 |
– |
27.6 |
---|
Single modes |
18.4 |
5.4 |
39.6 |
5.0 |
30.6 |
5.2 |
23.3 |
---|
Truck |
18.4 |
6.1 |
43.3 |
7.1 |
30.5 |
8.4 |
45.8 |
Rail |
S |
S |
S |
S |
S |
S |
29.2 |
All other Single modes |
32.6 |
6.5 |
25.1 |
0.4 |
26.3 |
3.1 |
4.3 |
Multiple modes |
25.3 |
2.6 |
32.5 |
2.0 |
36.5 |
0.4 |
19.0 |
---|
Parcel, USPS or courier |
26.1 |
2.6 |
35.8 |
2.0 |
43.8 |
0.5 |
19.0 |
All other multiple modes |
S |
S |
S |
S |
S |
S |
30.0 |
Other and unknown modes |
S |
S |
S |
S |
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 |
17.3 |
– |
31.8 |
– |
39.2 |
– |
23.4 |
---|
Single modes |
18.1 |
5.4 |
34.5 |
6.7 |
41.0 |
4.3 |
S |
---|
Truck |
18.2 |
5.4 |
34.5 |
6.6 |
41.1 |
4.2 |
S |
Rail |
S |
S |
S |
S |
S |
S |
31.6 |
All other Single modes |
S |
S |
S |
S |
S |
S |
17.8 |
Multiple modes |
35.4 |
1.9 |
37.1 |
0.3 |
35.8 |
0.7 |
11.3 |
---|
Parcel, USPS or courier |
35.4 |
1.9 |
37.1 |
0.3 |
35.8 |
0.7 |
11.3 |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
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 |
45.6 |
– |
S |
S |
48.3 |
– |
31.7 |
---|
Single modes |
48.3 |
8.8 |
S |
S |
S |
S |
27.2 |
---|
Truck |
S |
S |
S |
S |
S |
S |
S |
Rail |
– |
– |
– |
– |
– |
– |
– |
All other Single modes |
S |
S |
S |
S |
S |
S |
24.6 |
Multiple modes |
S |
S |
S |
S |
42.9 |
2.0 |
S |
---|
Parcel, USPS or courier |
S |
S |
S |
S |
42.9 |
2.0 |
S |
All other multiple modes |
– |
– |
– |
– |
– |
– |
– |
Other and unknown modes |
S |
S |
S |
S |
S |
S |
S |
---|
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.