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]

Excel | CSV

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 6.1 8.3 10.5 21.2 24.3 31.5 15.7 23.7 25.0 4.5 10.6 15.6
Single modes 6.3 8.0 10.3 22.5 25.0 31.5 10.6 25.6 22.1 15.7 19.8 46.2
Truck 7.9 7.1 11.0 23.6 25.0 31.9 11.1 26.0 23.5 19.1 18.2 60.9
Rail S 33.3 S S S S S S S 33.1 39.7 128.0
Water S S S S S S 28.8
Air (including truck and air) 23.9 27.3 27.6 18.2 46.7 15.1 22.9 S S 7.9 6.7 9.9
Pipeline S S S S S S S S S S
Multiple modes 13.2 20.9 25.0 14.1 14.5 24.4 15.7 16.9 18.7 5.5 6.5 8.8
Parcel, USPS or courier 13.3 21.6 26.3 15.1 12.2 27.9 18.0 12.7 28.7 5.5 6.5 8.8
Truck and rail S S S S 40.4 S S 40.2 S 29.8 16.7 36.9
Other multiple modes 48.0 S S S S S S S S S S S
Other and unknown modes 24.8 10.6 30.6 S 35.6 S S 25.9 S 32.3 48.3 133.5

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 29.9 S S 29.9 S S 31.7 43.5 85.6 S S S
Single modes 29.9 S S 29.9 S S 31.7 44.4 88.0 S S S
Truck 29.9 S S 29.9 S S 31.7 44.4 88.0 S S S
Rail
Water
Air (including truck and air)
Pipeline S S S S S S
Multiple modes S 43.8 S S S S S 34.6 S 31.6 29.2 58.0
Parcel, USPS or courier S 43.8 S S S S S 34.6 S 31.6 29.2 58.0
Truck and rail
Other multiple modes
Other and unknown modes S S S S S S S S

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 11.8 32.3 36.9 12.0 34.8 32.5 40.6 42.9 74.6 32.9 42.5 45.4
Single modes 11.9 32.3 36.7 12.0 34.8 32.4 40.7 42.9 74.5 42.5 42.5 39.7
Truck 11.9 32.3 36.7 12.0 34.8 32.4 40.7 42.9 74.5 42.5 14.3 30.9
Rail
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 45.5 S S S S S 27.7 30.0 412.5
Parcel, USPS or courier S S S 40.1 S S S S S 28.8 30.0 419.9
Truck and rail
Other multiple modes S S S S S S 31.6
Other and unknown modes S S S S S S S 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 S 35.9 S S S S 49.9 39.2 43.8 18.7 37.8 17.0
Single modes S 34.6 S S S S S 37.6 S 17.9 44.2 30.5
Truck S 34.6 S S S S S 35.4 S 17.5 45.2 31.5
Rail S S S S S S 29.8
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 31.1 9.4
Parcel, USPS or courier S S S S S S S S S 31.6 31.1 9.4
Truck and rail
Other multiple modes
Other and unknown modes S S S S S S S 48.8 S 25.8 32.0 0.3

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 26.5 42.0 177.1 30.7 39.4 140.4 S 46.3 S 30.2 36.8 985.1
Single modes 28.2 42.1 168.9 32.9 39.4 137.6 41.5 46.3 259.9 S 37.0 S
Truck 28.2 42.1 168.9 32.9 39.4 137.6 41.5 46.3 259.9 S 37.0 S
Rail
Water
Air (including truck and air)
Pipeline S S S S S S
Multiple modes S S S S S S S S S 29.7 31.6 243.9
Parcel, USPS or courier S S S S S S S S S 29.7 31.6 243.9
Truck and rail
Other multiple modes
Other and unknown modes S S S S S S S S S 31.5 31.6 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 13.2 19.9 29.6 18.8 46.0 2.0 11.8 S S 21.3 S S
Single modes 11.9 23.0 28.4 20.0 46.1 1.9 12.6 S S 35.6 S S
Truck 12.3 22.6 28.0 20.0 46.2 1.9 12.8 S S 39.3 S S
Rail S S S S S S 30.2
Water
Air (including truck and air) 38.5 S S 33.2 38.9 101.6 29.9 38.5 129.3 20.7 25.3 27.7
Pipeline S S S S S S
Multiple modes 22.9 26.3 69.6 35.1 39.5 70.1 22.3 S S 18.5 S S
Parcel, USPS or courier 22.9 26.4 69.7 35.1 41.3 74.2 22.3 21.0 69.8 18.5 S S
Truck and rail
Other multiple modes S S S S S S 31.6
Other and unknown modes 44.9 S S 36.7 S S 36.7 S S S S 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 8.7 14.4 20.2 23.7 17.6 58.1 17.1 17.5 26.4 6.8 9.9 13.7
Single modes 10.2 17.7 24.1 25.0 18.5 61.9 15.9 20.5 26.4 23.9 39.4 88.4
Truck 10.4 18.3 25.0 25.4 20.3 68.1 16.1 21.9 30.2 23.9 38.6 98.0
Rail 46.3 44.7 43.6 38.1
Water S S S S S S 31.6
Air (including truck and air) 49.4 32.2 66.4 S 42.5 S S 28.8 S 46.3 18.1 22.1
Pipeline S S S S S S S S S S
Multiple modes 14.4 17.4 27.1 26.9 24.5 27.3 19.0 27.1 14.7 2.3 4.9 5.4
Parcel, USPS or courier 14.5 17.8 27.9 29.7 26.4 40.0 16.1 29.9 25.1 2.3 4.9 5.4
Truck and rail S 49.8 S S S S S S S 29.8 21.2 32.6
Other multiple modes S S S S S S S S S 49.7 31.6 8.7
Other and unknown modes 34.7 24.9 98.9 S 36.5 S S 25.3 S S 44.2 S

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 11.2 16.9 17.6 43.4 48.2 98.7 38.3 41.3 67.5 17.6 23.6 37.3
Single modes 14.8 20.6 22.8 43.9 S S 39.8 S S 21.0 40.3 66.6
Truck 15.7 21.9 23.9 43.9 46.1 114.9 40.6 38.7 122.7 20.0 44.2 73.0
Rail S S S S S S S S S 31.6 S S
Water S S S S S S 29.8
Air (including truck and air) 27.8 36.6 67.6 34.6 S S 26.9 S S 19.8 11.0 23.2
Pipeline S S S S S S
Multiple modes 22.8 16.2 25.1 22.1 24.7 18.2 14.7 S S 12.3 20.1 33.9
Parcel, USPS or courier 22.8 16.6 26.3 22.0 24.5 22.5 13.8 18.8 17.8 12.5 20.0 34.0
Truck and rail S S S S S S 31.6
Other multiple modes S S S S S S 30.2
Other and unknown modes S 30.9 S 41.4 33.1 14.9 47.2 33.3 14.1 S 40.6 S

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 14.4 16.8 15.2 31.2 11.4 74.3 S 19.7 S 6.6 18.6 30.5
Single modes 12.7 22.9 15.4 13.2 13.4 32.3 15.6 23.5 32.9 13.3 S S
Truck 14.9 22.6 14.0 13.7 13.2 32.4 15.4 23.6 35.4 15.0 S S
Rail
Water S S S S S S 31.6
Air (including truck and air) 25.9 29.5 28.0 32.3 29.4 15.5 34.5 34.0 16.0 9.8 7.3 12.7
Pipeline S S S S S S
Multiple modes 21.6 30.6 32.0 40.0 14.0 104.6 43.1 17.7 89.3 4.4 6.9 6.8
Parcel, USPS or courier 21.7 31.7 34.1 40.5 14.9 112.5 44.5 18.9 101.2 4.4 7.0 6.8
Truck and rail S S S S S S S S S 31.6 28.7 59.2
Other multiple modes S S S S S S 31.6
Other and unknown modes S 30.1 S S 31.7 S S 29.3 S 26.9 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 21.4 12.4 62.1 27.9 30.1 67.9 23.0 36.7 61.4 13.9 12.7 16.8
Single modes 24.6 8.7 74.8 28.2 30.4 64.4 24.3 33.3 56.7 26.9 29.3 31.8
Truck 24.7 9.0 75.9 28.2 30.4 64.4 24.2 33.4 57.0 26.8 19.6 45.1
Rail
Water
Air (including truck and air) S 43.9 S S S S S S S 26.0 17.7 19.6
Pipeline S S S S S S
Multiple modes 13.3 29.1 54.2 18.2 31.3 70.6 21.6 29.3 78.9 11.6 7.7 13.0
Parcel, USPS or courier 13.3 29.1 54.1 17.7 31.3 69.5 21.8 29.3 74.9 11.6 7.7 13.0
Truck and rail
Other multiple modes S S S S S S 31.6
Other and unknown modes 40.5 S S 45.2 49.7 324.1 43.6 S 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 S S S S S S S S S S 27.6 S
Single modes S 49.3 S S S S S S S S S S
Truck S 49.9 S S S S S S S S S S
Rail
Water
Air (including truck and air) S S S S S S S S S 29.8 30.1 27.9
Pipeline S S S S S S
Multiple modes S S S S S S S S S S 26.1 S
Parcel, USPS or courier S S S S S S S S S S 26.1 S
Truck and rail
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, Individual State Data, December 2004.