Table B-20 - Estimated Measures of Reliability for Shipment Characteristics by Commodity Group and Mode of Transportation for State of Origin: 2002 and 1997
Monday, July 2, 2012
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 | 14.5 | 7.5 | 22.8 | 14.2 | 48.2 | 43.4 | 38.1 | 16.9 | 78.2 | 10.0 | 11.4 | 20.4 |
| Single modes | 18.2 | 9.7 | 27.5 | 14.5 | 49.1 | 43.7 | 36.8 | 16.6 | 75.8 | 22.5 | 24.5 | 75.4 |
| Truck | 18.8 | 9.9 | 28.2 | 14.5 | 49.1 | 43.7 | 37.3 | 17.0 | 77.5 | 24.0 | 26.7 | 82.1 |
| Rail | S | S | S | S | S | S | S | S | S | S | 28.0 | S |
| Water | 49.0 | – | – | S | – | S | S | – | S | S | – | S |
| Air (including truck and air) | 19.1 | 28.3 | 100.0 | 36.7 | 28.8 | 124.5 | S | 33.7 | S | 11.0 | 9.3 | 14.2 |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | 13.8 | 15.8 | 32.9 | 24.6 | 16.1 | 48.4 | 32.4 | 14.8 | 66.7 | 6.2 | 7.4 | 9.6 |
| Parcel, USPS or courier | 13.8 | 15.8 | 32.9 | 24.7 | 16.1 | 48.5 | 32.5 | 14.8 | 67.2 | 6.2 | 7.4 | 9.6 |
| Truck and rail | S | S | S | S | S | S | S | S | S | 31.6 | 32.8 | 92.8 |
| Other multiple modes | S | – | S | S | – | S | S | – | S | S | – | S |
| Other and unknown modes | 38.7 | 34.3 | 80.7 | S | 46.3 | S | S | S | S | 39.2 | 37.2 | 51.5 |
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 | 27.1 | 50.0 | 76.2 | 45.9 | S | S | 37.6 | S | S | 37.6 | 25.3 | 264.5 |
| Single modes | 27.1 | 49.9 | 77.2 | 46.1 | S | S | 37.6 | S | S | S | 25.8 | S |
| Truck | 28.3 | 49.9 | 74.1 | 47.1 | S | S | 37.4 | S | S | S | 25.8 | S |
| Rail | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Water | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Air (including truck and air) | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | 45.9 | S | S | S | S | S | 41.6 | S | S | 40.6 | 31.6 | 16.1 |
| Parcel, USPS or courier | S | S | S | S | S | S | 49.0 | S | S | 40.4 | 31.6 | 16.6 |
| 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 | S | 31.6 | 29.8 | 14.5 |
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 | 23.3 | 34.1 | 39.9 | 38.6 | 36.2 | 122.5 | S | S | S | S | 32.1 | S |
| Single modes | 25.4 | 33.8 | 39.5 | 39.4 | 36.1 | 130.1 | S | S | S | S | 32.2 | S |
| Truck | 25.4 | 33.8 | 39.5 | 39.4 | 36.1 | 130.1 | S | S | S | S | 32.2 | 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 | 35.4 | 31.6 | 9.9 |
| Parcel, USPS or courier | S | S | S | S | S | S | S | S | S | 31.6 | 31.6 | 23.3 |
| 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 | S | S | 46.2 | 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 | 21.1 | S | S | 18.1 | S | S | 27.9 | S | S | 21.3 | 31.8 | 82.9 |
| Single modes | 19.3 | S | S | 18.0 | S | S | 27.9 | S | S | 22.6 | 32.1 | 96.8 |
| Truck | 19.3 | S | S | 18.0 | S | S | 27.9 | S | S | 22.6 | 32.2 | 97.5 |
| 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 | S | – | S | S | – | 31.6 | – |
| Parcel, USPS or courier | – | S | S | – | S | S | – | S | S | – | 31.6 | – |
| Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
| Other and unknown modes | S | S | S | S | S | S | S | S | S | 28.0 | 31.5 | 1.1 |
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 | 25.7 | 19.7 | 65.2 | 24.3 | 20.1 | 72.5 | 30.3 | 29.0 | 100.4 | 36.0 | 20.3 | 48.2 |
| Single modes | 25.6 | 19.7 | 65.1 | 24.3 | 20.1 | 72.4 | 30.3 | 29.0 | 100.4 | 22.1 | 18.7 | 36.4 |
| Truck | 25.6 | 19.7 | 65.1 | 24.3 | 20.1 | 72.4 | 30.3 | 29.0 | 100.4 | 22.1 | 18.7 | 36.4 |
| Rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Water | – | – | – | – | – | – | – | – | – | – | – | – |
| Air (including truck and air) | – | – | – | – | – | – | – | – | – | – | – | – |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Parcel, USPS or courier | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
| Other and unknown modes | S | S | S | S | S | S | S | S | S | 31.6 | 29.9 | 76.3 |
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 | 15.3 | 21.6 | 31.6 | 36.9 | 28.0 | 70.3 | 27.8 | 30.1 | 54.4 | 18.0 | 35.9 | 53.3 |
| Single modes | 9.4 | 21.6 | 23.2 | 37.8 | 29.0 | 73.8 | 28.1 | 29.3 | 60.1 | 24.9 | S | S |
| Truck | 9.4 | 21.7 | 23.5 | 37.8 | 29.0 | 73.8 | 28.1 | 29.4 | 60.3 | 25.6 | S | S |
| Rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Water | – | – | – | – | – | – | – | – | – | – | – | – |
| Air (including truck and air) | 32.6 | S | S | 44.5 | S | S | 45.0 | S | S | 23.5 | 45.9 | 141.0 |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | 41.7 | 41.5 | 134.5 | 26.8 | 37.7 | 36.5 | 30.2 | S | S | 18.7 | 20.0 | 17.2 |
| Parcel, USPS or courier | 41.7 | 41.5 | 134.5 | 26.8 | 37.7 | 36.5 | 30.2 | S | S | 18.7 | 20.0 | 17.2 |
| Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Other multiple modes | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Other and unknown modes | 18.3 | 49.4 | 47.2 | 29.6 | S | S | 27.3 | S | S | 33.3 | 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 | 11.8 | 13.7 | 19.8 | 33.5 | 24.3 | 40.9 | 19.7 | 18.8 | 27.4 | 9.1 | 13.6 | 14.5 |
| Single modes | 16.7 | 13.6 | 21.1 | 35.9 | 25.1 | 41.8 | 24.0 | 18.4 | 28.4 | 30.3 | 27.8 | 34.5 |
| Truck | 17.0 | 13.4 | 20.9 | 36.0 | 25.2 | 41.8 | 24.3 | 18.4 | 28.4 | 29.9 | 31.8 | 40.8 |
| Rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Water | – | – | – | – | – | – | – | – | – | – | – | – |
| Air (including truck and air) | 49.7 | S | S | S | S | S | S | S | S | 31.8 | 20.4 | 15.4 |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | 16.8 | 24.4 | 53.1 | 22.8 | 36.3 | 107.3 | 24.1 | 29.2 | 79.1 | 5.1 | 21.3 | 18.0 |
| Parcel, USPS or courier | 16.8 | 24.4 | 53.0 | 22.9 | 36.3 | 106.9 | 24.3 | 29.2 | 78.0 | 5.1 | 21.3 | 18.0 |
| Truck and rail | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Other multiple modes | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Other and unknown modes | 40.1 | S | S | S | S | S | 29.8 | S | S | S | S | 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 | S | 14.7 | S | 45.4 | 24.3 | 142.8 | S | S | S | 18.8 | 27.4 | 58.7 |
| Single modes | S | 18.3 | S | 47.3 | 22.3 | 175.9 | S | 33.3 | S | 26.6 | S | S |
| Truck | S | 18.5 | S | 47.3 | 22.3 | 176.7 | S | 34.8 | S | 27.3 | S | S |
| Rail | – | S | S | – | S | S | – | S | S | – | 31.1 | – |
| Water | – | – | – | – | – | – | – | – | – | – | – | – |
| Air (including truck and air) | S | S | S | S | S | S | S | S | S | 22.3 | 42.7 | 62.2 |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | 36.5 | 33.2 | 37.4 | S | 30.6 | S | S | 29.6 | S | 13.0 | 22.7 | 41.1 |
| Parcel, USPS or courier | 36.5 | 33.2 | 37.4 | S | 30.7 | S | S | 29.7 | S | 13.0 | 22.7 | 41.1 |
| 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 | 26.9 | 40.6 | 117.5 |
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 | 16.1 | 13.5 | 27.9 | 28.3 | 20.0 | 46.7 | 26.4 | 26.0 | 29.7 | 9.8 | S | S |
| Single modes | 22.1 | 17.5 | 26.6 | 29.0 | 22.1 | 38.4 | 30.1 | 27.8 | 24.1 | 38.2 | S | S |
| Truck | 24.0 | 17.7 | 25.3 | 29.2 | 21.4 | 39.3 | 32.2 | 25.8 | 26.9 | 40.1 | S | S |
| Rail | – | S | S | – | S | S | – | S | S | – | 31.6 | – |
| Water | S | – | S | S | – | S | S | – | S | 32.5 | – | – |
| Air (including truck and air) | 30.5 | 36.9 | 284.5 | 29.5 | 43.6 | 51.5 | 42.8 | 44.4 | 51.7 | 13.2 | 33.1 | 38.6 |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | 16.7 | 23.8 | 80.7 | S | 35.4 | S | 43.0 | 24.4 | 216.3 | 9.4 | 11.0 | 17.4 |
| Parcel, USPS or courier | 16.7 | 23.8 | 80.7 | S | 35.4 | S | 43.0 | 24.4 | 216.3 | 9.4 | 11.0 | 17.4 |
| Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
| Other and unknown modes | 39.4 | 47.6 | 218.0 | S | S | S | 24.3 | S | S | S | 31.2 | 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 | 10.0 | 13.9 | 26.4 | 26.5 | S | S | 16.0 | 30.3 | 55.1 | 6.0 | 11.5 | 12.3 |
| Single modes | 17.1 | 19.4 | 40.9 | 33.1 | S | S | 22.9 | 39.1 | 62.7 | 30.0 | 24.9 | 34.4 |
| Truck | 17.6 | 20.8 | 43.6 | 33.1 | S | S | 22.8 | 39.4 | 63.2 | 33.9 | 26.9 | 33.1 |
| Rail | S | S | S | S | S | S | S | S | S | 31.6 | 46.1 | 27.0 |
| Water | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Air (including truck and air) | S | 39.4 | S | 37.6 | 46.5 | 82.3 | 41.5 | 48.2 | 72.4 | 21.7 | 21.2 | 19.3 |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | 19.8 | 15.3 | 37.7 | 41.5 | 21.8 | 98.3 | 35.9 | 14.2 | 75.8 | 6.5 | 10.4 | 11.1 |
| Parcel, USPS or courier | 19.8 | 15.3 | 37.7 | 41.5 | 22.0 | 99.1 | 35.9 | 14.3 | 77.4 | 6.5 | 10.4 | 11.1 |
| Truck and rail | – | S | S | – | S | S | – | S | S | – | 31.6 | – |
| Other multiple modes | S | – | S | S | – | S | S | – | S | 31.6 | – | – |
| Other and unknown modes | 42.1 | 46.6 | 94.7 | S | 44.3 | S | S | S | S | 33.5 | 32.0 | 31.4 |
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 | 46.2 | S | S | 21.8 | 44.9 | 150.6 |
| Single modes | S | S | S | S | S | S | S | S | S | 39.9 | S | S |
| Truck | S | S | S | S | S | S | S | S | S | 39.9 | S | S |
| Rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Water | – | – | – | – | – | – | – | – | – | – | – | – |
| Air (including truck and air) | S | S | S | S | S | S | S | S | S | 31.6 | 31.6 | 5.5 |
| Pipeline | – | – | – | – | – | – | S | S | S | S | S | S |
| Multiple modes | S | 48.1 | S | S | S | S | S | S | S | 25.1 | 28.0 | 33.6 |
| Parcel, USPS or courier | S | 48.1 | S | S | S | S | S | S | S | 25.1 | 28.0 | 33.6 |
| Truck and rail | – | – | – | – | – | – | – | – | – | – | – | – |
| Other multiple modes | – | – | – | – | – | – | – | – | – | – | – | – |
| Other and unknown modes | S | S | S | S | S | S | S | S | S | 31.2 | 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, Individual State Data, December 2004.