Table B-20 - Estimated Measures of Reliability for Shipment Characteristics by Commodity Group and Mode of Transportation for State of Origin: 2002 and 1997
Table B-20 - Estimated Measures of Reliability for Shipment Characteristics by Commodity Group and Mode of Transportation for State of Origin: 2002 and 1997
[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]
All Commodities
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 9.0 | 6.0 | 10.0 | 12.2 | 10.2 | 12.6 | 16.9 | 13.7 | 14.6 | 13.0 | 13.8 | 6.5 |
Single modes | 10.4 | 6.1 | 12.3 | 12.4 | 10.3 | 12.7 | 17.0 | 14.1 | 15.0 | 18.1 | 18.7 | 43.0 |
Truck | 7.3 | 8.8 | 12.3 | 14.5 | 9.9 | 15.8 | 9.4 | 21.4 | 20.7 | 13.0 | 6.1 | 20.9 |
Rail | 20.6 | 16.8 | 14.5 | 16.8 | 16.2 | 13.7 | 24.9 | 16.1 | 16.6 | 14.0 | 15.5 | 21.6 |
Water | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
Air (including truck and air) | 36.5 | 15.2 | 17.7 | 42.7 | 36.3 | 12.8 | 39.2 | 40.3 | 20.0 | 7.3 | 5.6 | 13.7 |
Pipeline | S | S | S | 49.1 | S | S | S | S | S | S | S | S |
Multiple modes | 16.0 | 21.7 | 12.8 | 43.1 | 15.4 | 101.4 | S | 19.7 | S | 10.8 | 6.4 | 8.0 |
Parcel, USPS or courier | 16.3 | 21.7 | 12.4 | 22.9 | 15.4 | 21.2 | 17.3 | 19.7 | 13.3 | 10.8 | 6.4 | 8.0 |
Truck and rail | S | S | S | S | S | S | S | S | S | 29.8 | 30.0 | 38.1 |
Other multiple modes | S | – | S | S | – | S | S | – | S | 34.6 | – | – |
Other and unknown modes | 30.1 | 18.1 | 27.6 | S | 42.9 | S | 49.5 | S | S | 31.2 | S | S |
SCTG 01-05, Agriculture products and fish
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 42.4 | 37.1 | 24.7 | S | 29.1 | S | S | S | S | S | S | S |
Single modes | 42.4 | 37.2 | 25.2 | S | 26.6 | S | S | S | S | S | 27.2 | S |
Truck | 44.8 | 37.2 | 23.3 | S | 26.6 | S | 39.5 | S | S | S | 27.2 | S |
Rail | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | – | – | – | – | – | – | – | – | – | – | – | – |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | – | S | S | – | S | S | – | S | S | – | 31.1 | – |
Parcel, USPS or courier | – | S | S | – | S | S | – | S | S | – | 31.1 | – |
Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
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 | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 15.4 | 20.2 | 38.6 | 27.1 | 25.5 | 67.0 | 16.9 | 41.8 | 82.5 | 27.7 | 43.6 | 39.3 |
Single modes | 15.9 | 21.8 | 41.9 | 27.3 | 25.6 | 67.1 | 17.1 | 42.1 | 83.3 | 21.0 | 15.5 | 34.9 |
Truck | 15.9 | 21.8 | 41.9 | 27.3 | 25.6 | 67.1 | 17.1 | 42.1 | 83.3 | 21.0 | 15.5 | 34.9 |
Rail | – | – | – | – | – | – | – | – | – | – | – | – |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | – | – | – | – | – | – | – | – | – | – | – | – |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | 47.3 | 44.9 | 23.2 | S | 32.1 | S | S | 36.2 | S | 25.6 | 18.9 | 27.8 |
Parcel, USPS or courier | 47.3 | 44.9 | 23.2 | S | 32.1 | S | S | 36.2 | S | 25.6 | 18.9 | 27.8 |
Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
Other and unknown modes | S | S | S | S | S | S | S | S | S | S | 31.6 | S |
SCTG 10-14, Stones, non-metallic minerals, and metallic ores
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 17.8 | 43.9 | 21.5 | 25.7 | 47.0 | 56.6 | 37.1 | S | S | 49.2 | 27.4 | 49.1 |
Single modes | 18.4 | 44.2 | 21.7 | 27.7 | 48.0 | 54.4 | 38.1 | S | S | 45.9 | 23.2 | 51.6 |
Truck | 17.7 | S | S | 32.7 | 48.8 | 54.9 | 33.0 | S | S | S | 22.9 | S |
Rail | S | 43.5 | S | 45.5 | S | S | S | S | S | 22.2 | 30.4 | 34.5 |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | – | S | S | – | S | S | – | S | S | – | 31.6 | – |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | S | S | S | S | S | S | S | S | S | 31.6 | 37.7 | 140.6 |
Parcel, USPS or courier | – | S | S | – | S | S | – | S | S | – | 37.7 | – |
Truck and rail | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
Other and unknown modes | S | S | S | S | S | S | S | S | S | S | S | S |
SCTG 15-19, Coal and petroleum products
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 26.8 | 16.4 | 33.7 | 17.9 | 17.7 | 20.8 | 29.4 | 12.8 | 17.2 | 39.3 | 15.6 | 17.6 |
Single modes | 26.9 | 16.4 | 33.9 | 17.9 | 17.6 | 20.8 | 29.4 | 12.7 | 17.2 | 40.0 | 16.8 | 17.9 |
Truck | 8.4 | 19.6 | 17.9 | 22.3 | 23.1 | 38.7 | 28.4 | 32.3 | 35.3 | 41.0 | 16.8 | 19.6 |
Rail | 35.2 | 18.3 | 30.1 | 19.2 | 19.4 | 16.1 | 38.3 | 12.6 | 17.4 | 44.2 | 25.2 | 11.7 |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | – | – | – | – | – | – | – | – | – | – | – | – |
Pipeline | S | S | S | 49.1 | S | S | S | S | S | S | S | S |
Multiple modes | S | S | S | S | S | S | S | S | S | 31.6 | 38.5 | 13.5 |
Parcel, USPS or courier | – | S | S | – | S | S | – | S | S | – | 38.5 | – |
Truck and rail | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
Other and unknown modes | – | S | S | – | S | S | – | S | S | – | S | S |
SCTG 20-24, Pharmaceutical and chemical products
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 20.8 | 23.4 | 13.3 | 30.5 | 28.0 | 14.0 | 34.7 | 36.2 | 25.2 | 32.7 | 19.7 | 8.6 |
Single modes | 20.2 | 19.3 | 21.3 | 30.6 | 28.0 | 13.9 | 34.7 | 36.3 | 24.8 | S | 32.9 | S |
Truck | 27.5 | 22.8 | 29.4 | 22.8 | 30.3 | 11.7 | 32.0 | 18.2 | 19.5 | S | 18.6 | S |
Rail | 39.2 | S | S | 38.8 | 29.7 | 17.3 | 37.4 | 41.6 | 27.1 | 21.2 | 16.8 | 35.4 |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | S | S | S | 42.6 | 38.1 | 517.8 | 47.8 | 43.8 | 869.5 | 24.1 | 24.7 | 41.0 |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | 42.4 | 37.8 | 5.6 | S | 27.7 | S | S | 33.1 | S | 20.1 | 11.9 | 13.8 |
Parcel, USPS or courier | S | 37.8 | S | S | 27.7 | S | 46.7 | 33.1 | 8.6 | 20.3 | 11.9 | 13.8 |
Truck and rail | S | S | S | S | S | S | S | S | S | 31.6 | 31.6 | 98.6 |
Other multiple modes | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
Other and unknown modes | S | 36.8 | S | S | 41.1 | S | S | S | S | S | 24.0 | S |
SCTG 25-30, Logs, wood products, and textile and leather
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 21.1 | 9.9 | 22.8 | 15.5 | 26.0 | 15.6 | 26.1 | 35.4 | 18.3 | 18.4 | 19.1 | 10.1 |
Single modes | 25.8 | 8.6 | 28.1 | 15.8 | 22.7 | 17.2 | 26.4 | 37.6 | 26.0 | 20.9 | 45.9 | 105.3 |
Truck | 26.2 | 8.8 | 28.1 | 15.3 | 23.0 | 16.1 | 24.2 | 38.4 | 22.1 | 9.6 | 47.9 | 89.8 |
Rail | 44.6 | 46.4 | 298.3 | 45.2 | S | S | S | S | S | 25.3 | 25.9 | 42.9 |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | S | 46.1 | S | S | S | S | S | S | S | 26.7 | 20.9 | 46.5 |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | 38.3 | 35.5 | 38.8 | 33.6 | 41.2 | 24.0 | 49.5 | 48.5 | 23.7 | 15.5 | 13.4 | 13.3 |
Parcel, USPS or courier | 38.3 | 35.5 | 38.7 | 31.4 | 41.2 | 22.0 | 42.4 | 48.5 | 17.4 | 15.5 | 13.4 | 13.3 |
Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
Other multiple modes | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
Other and unknown modes | 34.9 | S | S | 44.2 | S | S | S | S | S | 32.5 | 41.2 | 3.9 |
SCTG 31-34, Base metal and machinery
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 19.1 | 7.2 | 18.8 | 33.0 | 15.4 | 24.1 | 24.7 | 19.1 | 33.7 | 25.8 | 23.1 | 50.8 |
Single modes | 19.7 | 8.6 | 20.2 | 35.2 | 15.4 | 23.8 | 24.9 | 18.4 | 37.0 | 33.8 | 36.2 | 91.8 |
Truck | 19.8 | 9.0 | 25.6 | 35.6 | 15.9 | 22.7 | 31.7 | 23.8 | 62.9 | 33.1 | 27.9 | 96.7 |
Rail | 35.1 | 27.1 | 11.8 | 38.1 | 29.1 | 71.5 | 37.8 | 37.0 | 41.2 | 24.1 | 22.6 | 21.0 |
Water | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
Air (including truck and air) | S | 38.0 | S | S | S | S | S | S | S | 19.7 | 6.5 | 26.3 |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | 35.5 | 25.5 | 67.9 | 43.2 | 30.7 | 124.5 | 39.1 | 29.4 | 104.3 | 18.4 | 13.7 | 22.9 |
Parcel, USPS or courier | 35.5 | 25.5 | 67.9 | 43.2 | 30.7 | 124.5 | 39.1 | 29.4 | 104.3 | 18.4 | 13.7 | 22.9 |
Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
Other and unknown modes | 28.9 | 40.1 | 20.9 | S | 46.7 | S | S | S | S | 38.4 | 29.0 | 57.5 |
SCTG 35-38, Electronic, motorized vehicles, and precision instruments
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 16.8 | 24.3 | 21.1 | 45.3 | 15.5 | 77.9 | 39.6 | 24.5 | 89.8 | 37.8 | 20.2 | 39.5 |
Single modes | 24.5 | 30.3 | 25.9 | S | 17.2 | S | 43.7 | 28.2 | 112.6 | S | S | S |
Truck | 27.4 | 36.9 | 33.8 | S | 16.7 | S | 44.2 | 25.1 | 124.6 | S | 38.0 | S |
Rail | – | – | – | – | – | – | – | – | – | – | – | – |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | 45.0 | 16.9 | 18.4 | S | 48.8 | S | S | S | S | 12.7 | 10.0 | 22.8 |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | 46.2 | 23.7 | 48.2 | 40.4 | 26.4 | 48.6 | 28.5 | 23.3 | 39.2 | 14.7 | 9.7 | 15.9 |
Parcel, USPS or courier | 46.2 | 23.7 | 48.2 | 40.4 | 26.4 | 48.6 | 28.5 | 23.3 | 39.3 | 14.7 | 9.7 | 15.9 |
Truck and rail | – | S | S | – | S | S | – | S | S | – | 31.6 | – |
Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
Other and unknown modes | 48.1 | 21.0 | 44.2 | S | 21.4 | S | S | 34.2 | S | S | S | S |
SCTG 39-43, Furniture, mixed freight and misc manufactured products
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 21.7 | 20.6 | 55.4 | 33.1 | 27.9 | 249.7 | 42.6 | 38.0 | 200.8 | 19.5 | 15.9 | 23.7 |
Single modes | 24.1 | 23.6 | 95.5 | 33.8 | 29.3 | 272.2 | 44.2 | 42.1 | 231.9 | 18.3 | 31.0 | 62.1 |
Truck | 23.8 | 26.1 | 105.5 | 34.2 | 27.1 | 340.5 | 45.2 | 40.6 | 313.0 | 19.0 | 28.5 | 31.3 |
Rail | S | S | S | S | S | S | S | S | S | 31.6 | 30.6 | 31.4 |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | 42.5 | 32.7 | 67.2 | S | 42.4 | S | S | 31.2 | S | 15.6 | 9.8 | 27.7 |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | 24.3 | 33.2 | 28.2 | 39.7 | 40.2 | 62.8 | 26.3 | 35.4 | 30.7 | 13.1 | 8.1 | 14.1 |
Parcel, USPS or courier | 24.3 | 33.2 | 28.2 | 39.7 | 40.2 | 62.9 | 26.3 | 35.5 | 30.8 | 13.1 | 8.1 | 14.1 |
Truck and rail | – | S | S | – | S | S | – | S | S | – | 31.6 | – |
Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
Other and unknown modes | 47.7 | 40.2 | 70.0 | 42.2 | S | S | S | 38.6 | S | S | S | S |
Commodity Unknown
Mode of transportation | Value | Tons | Ton-miles | Average miles per shipment | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | CV 2002 |
CV 1997 |
Std. error of percent change 1997-2002 | |
All modes | 37.6 | 31.7 | 30.9 | S | 35.3 | S | S | S | S | 36.8 | 36.5 | 40.2 |
Single modes | 45.4 | 37.8 | 34.4 | S | 41.2 | S | S | S | S | 48.3 | 42.2 | 44.8 |
Truck | 21.8 | 38.4 | 17.7 | S | 41.3 | S | S | S | S | 49.9 | S | S |
Rail | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
Water | – | – | – | – | – | – | – | – | – | – | – | – |
Air (including truck and air) | – | S | S | – | S | S | – | S | S | – | 25.9 | – |
Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
Multiple modes | S | S | S | 43.9 | S | S | S | S | S | 29.2 | 29.1 | 30.9 |
Parcel, USPS or courier | S | S | S | 43.9 | S | S | S | S | S | 29.2 | 29.1 | 30.9 |
Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
Other and unknown modes | S | S | S | S | S | S | S | S | S | 31.6 | 32.6 | 3.7 |
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, Individual State Data, December 2004.