Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for State of Origin: 2002
Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for State of Origin: 2002
[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]
All modes
Shipment Weight | 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 shipment sizes | 8.7 | – | 22.1 | – | 10.0 | – | 17.6 |
Less than 50 lbs | 24.2 | 2.1 | 18.7 | – | 30.2 | 0.1 | 15.4 |
50 to 99 lbs | 26.0 | 0.6 | 13.7 | – | 14.6 | – | 18.4 |
100 to 499 lbs | 31.0 | 3.2 | 17.1 | 0.3 | 9.6 | – | 22.7 |
500 to 749 lbs | 26.5 | 0.6 | 18.9 | 0.1 | 18.4 | – | 29.4 |
750 to 999 lbs | 18.3 | 0.2 | 16.6 | 0.1 | 21.0 | – | 18.1 |
1,000 to 9,999 lbs | 21.7 | 4.8 | 16.3 | 1.8 | 30.6 | 3.2 | 18.4 |
10,000 to 49,999 lbs | 6.5 | 3.4 | 14.9 | 6.2 | 8.5 | 4.4 | 18.6 |
50,000 to 99,999 lbs | 29.3 | 1.6 | 29.9 | 6.4 | 29.7 | 2.8 | 22.1 |
100,000 lbs or more | 44.3 | 4.4 | 36.8 | 7.9 | 29.1 | 5.2 | S |
Single modes
Shipment Weight | 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 shipment sizes | 7.7 | – | 22.6 | – | 10.8 | – | 24.4 |
Less than 50 lbs | 17.2 | 0.4 | 19.2 | – | 25.7 | – | 44.8 |
50 to 99 lbs | 21.1 | 0.3 | 17.3 | – | 17.4 | – | 46.2 |
100 to 499 lbs | 34.0 | 3.8 | 14.9 | 0.2 | 14.3 | 0.1 | 30.3 |
500 to 749 lbs | 28.2 | 0.7 | 13.6 | 0.1 | 21.6 | – | 31.2 |
750 to 999 lbs | 22.0 | 0.2 | 15.7 | – | 23.2 | – | 19.3 |
1,000 to 9,999 lbs | 20.5 | 4.4 | 15.2 | 1.6 | 12.2 | 1.2 | 10.2 |
10,000 to 49,999 lbs | 7.1 | 3.8 | 15.4 | 6.6 | 9.4 | 4.8 | 19.2 |
50,000 to 99,999 lbs | 29.3 | 1.8 | 29.9 | 6.5 | 29.7 | 2.8 | 22.0 |
100,000 lbs or more | 44.6 | 4.7 | 37.2 | 8.0 | 29.2 | 5.3 | S |
Truck
Shipment Weight | 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 shipment sizes | 8.5 | – | 16.5 | – | 7.0 | – | 18.0 |
Less than 50 lbs | 17.7 | 0.3 | 20.3 | – | 22.3 | – | 49.2 |
50 to 99 lbs | 21.9 | 0.4 | 17.4 | – | 17.8 | – | 43.0 |
100 to 499 lbs | 35.4 | 3.9 | 15.3 | 0.2 | 14.6 | 0.1 | 24.4 |
500 to 749 lbs | 29.3 | 0.7 | 13.7 | – | 20.1 | – | 23.7 |
750 to 999 lbs | 23.6 | 0.3 | 15.7 | – | 23.8 | – | 19.8 |
1,000 to 9,999 lbs | 20.7 | 4.4 | 15.2 | 1.5 | 12.2 | 1.3 | 10.1 |
10,000 to 49,999 lbs | 7.1 | 4.7 | 15.3 | 5.3 | 9.6 | 3.4 | 19.3 |
50,000 to 99,999 lbs | 29.6 | 2.6 | 29.9 | 7.0 | 30.0 | 3.2 | 18.9 |
100,000 lbs or more | 34.1 | 0.2 | 38.2 | 4.1 | 31.2 | 1.7 | S |
For-hire truck
Shipment Weight | 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 shipment sizes | 12.8 | – | 17.3 | – | 10.1 | – | 11.2 |
Less than 50 lbs | 39.3 | 0.5 | 24.2 | – | 38.7 | – | 23.8 |
50 to 99 lbs | 47.7 | 0.6 | 31.0 | – | 29.0 | – | 18.5 |
100 to 499 lbs | 40.6 | 5.0 | 17.7 | – | 16.3 | 0.1 | 13.7 |
500 to 749 lbs | 40.1 | 0.5 | 18.3 | – | 22.9 | 0.1 | 14.5 |
750 to 999 lbs | 46.1 | 0.3 | 18.0 | – | 25.1 | 0.1 | 19.2 |
1,000 to 9,999 lbs | 29.2 | 5.3 | 17.4 | 0.9 | 15.0 | 1.1 | 5.2 |
10,000 to 49,999 lbs | 8.1 | 6.3 | 15.7 | 5.8 | 14.0 | 4.0 | 20.2 |
50,000 to 99,999 lbs | 27.8 | 2.2 | 28.0 | 7.1 | 28.1 | 2.9 | 19.6 |
100,000 lbs or more | 37.7 | 0.3 | 44.9 | 5.4 | 43.3 | 2.6 | 33.3 |
Private truck
Shipment Weight | 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 shipment sizes | 9.1 | – | 20.9 | – | 13.0 | – | 11.5 |
Less than 50 lbs | 23.4 | 1.4 | 24.0 | 0.1 | 35.4 | – | 14.9 |
50 to 99 lbs | 12.3 | 0.5 | 19.4 | 0.1 | 22.4 | – | 21.8 |
100 to 499 lbs | 15.2 | 1.3 | 17.1 | 0.5 | 14.3 | – | 23.0 |
500 to 749 lbs | 38.1 | 1.1 | 14.7 | 0.2 | 12.7 | – | 21.9 |
750 to 999 lbs | 20.9 | 0.3 | 18.5 | 0.2 | 27.8 | – | 31.1 |
1,000 to 9,999 lbs | 23.0 | 5.8 | 18.6 | 2.7 | 21.1 | 2.4 | 6.6 |
10,000 to 49,999 lbs | 18.3 | 4.8 | 24.0 | 6.6 | 16.4 | 4.7 | 20.3 |
50,000 to 99,999 lbs | 41.3 | 3.6 | 37.1 | 8.2 | 35.9 | 4.4 | 18.4 |
100,000 lbs or more | S | S | S | S | S | S | S |
Rail
Shipment Weight | 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 shipment sizes | S | S | 28.1 | – | 37.2 | – | 38.1 |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | S | S | S | S | S | S | 31.6 |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | – | – | – | – | – | – | – |
10,000 to 49,999 lbs | S | S | S | S | S | S | 39.2 |
50,000 to 99,999 lbs | S | S | S | S | S | S | 31.6 |
100,000 lbs or more | S | S | 28.3 | 10.5 | 37.7 | 10.5 | 30.6 |
Water
Shipment Weight | 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 shipment sizes | 44.1 | – | S | S | 49.0 | – | 26.6 |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | – | – | – | – | – | – | – |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | – | – | – | – | – | – | – |
10,000 to 49,999 lbs | S | S | S | S | S | S | 31.6 |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | S | S | S | S | S | S | 28.0 |
Shallow draft
Shipment Weight | 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 shipment sizes | S | S | S | S | S | S | 28.0 |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | – | – | – | – | – | – | – |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | – | – | – | – | – | – | – |
10,000 to 49,999 lbs | – | – | – | – | – | – | – |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | S | S | S | S | S | S | 28.0 |
Great Lakes
Shipment Weight | 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 shipment sizes | – | – | – | – | – | – | – |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | – | – | – | – | – | – | – |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | – | – | – | – | – | – | – |
10,000 to 49,999 lbs | – | – | – | – | – | – | – |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | – | – | – | – | – | – | – |
Deep draft
Shipment Weight | 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 shipment sizes | S | S | S | S | 48.5 | – | 31.6 |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | – | – | – | – | – | – | – |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | – | – | – | – | – | – | – |
10,000 to 49,999 lbs | S | S | S | S | S | S | 31.6 |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | – | 0.8 | – | 4.0 | – | 4.4 | 33.3 |
Air (including truck and air)
Shipment Weight | 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 shipment sizes | 37.9 | – | 48.3 | – | S | S | 8.8 |
Less than 50 lbs | 40.4 | 10.1 | 32.7 | 10.1 | 37.2 | 11.4 | 13.6 |
50 to 99 lbs | S | S | S | S | S | S | 26.6 |
100 to 499 lbs | S | S | S | S | S | S | 22.4 |
500 to 749 lbs | S | S | S | S | S | S | 30.4 |
750 to 999 lbs | S | S | S | S | S | S | 31.6 |
1,000 to 9,999 lbs | S | S | S | S | S | S | 29.0 |
10,000 to 49,999 lbs | – | – | – | – | – | – | – |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | – | – | – | – | – | – | – |
Pipeline
Shipment Weight | 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 shipment sizes | 48.6 | – | 48.5 | – | S | S | S |
Less than 50 lbs | – | – | – | – | S | S | S |
50 to 99 lbs | – | – | – | – | S | S | S |
100 to 499 lbs | – | – | – | – | S | S | S |
500 to 749 lbs | – | – | – | – | S | S | S |
750 to 999 lbs | – | – | – | – | S | S | S |
1,000 to 9,999 lbs | S | S | S | S | S | S | S |
10,000 to 49,999 lbs | S | S | S | S | S | S | S |
50,000 to 99,999 lbs | S | S | S | S | S | S | S |
100,000 lbs or more | 48.7 | 8.1 | 48.6 | 6.2 | S | S | S |
Multiple modes
Shipment Weight | 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 shipment sizes | 24.1 | – | 28.4 | – | 44.2 | – | 11.9 |
Less than 50 lbs | 32.8 | 8.7 | 28.0 | 9.7 | 36.3 | 11.9 | 11.9 |
50 to 99 lbs | 41.0 | 4.1 | 24.9 | 0.9 | 22.4 | 1.8 | 14.7 |
100 to 499 lbs | 30.3 | 4.2 | 38.0 | 8.5 | 33.3 | 9.3 | 29.5 |
500 to 749 lbs | 41.8 | 0.9 | 47.6 | 4.7 | 47.9 | 3.4 | S |
750 to 999 lbs | S | S | S | S | S | S | 27.9 |
1,000 to 9,999 lbs | S | S | S | S | S | S | 27.9 |
10,000 to 49,999 lbs | 48.6 | 3.0 | S | S | S | S | 26.6 |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | S | S | S | S | S | S | 31.6 |
Parcel, USPS or courier
Shipment Weight | 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 shipment sizes | 25.2 | – | 31.3 | – | 25.7 | – | 12.7 |
Less than 50 lbs | 32.8 | 5.4 | 28.0 | 10.9 | 36.3 | 8.5 | 11.9 |
50 to 99 lbs | 41.0 | 4.0 | 24.9 | 4.6 | 22.4 | 3.8 | 14.7 |
100 to 499 lbs | 30.3 | 3.5 | 38.0 | 7.3 | 33.3 | 6.4 | 29.5 |
500 to 749 lbs | 41.8 | 0.9 | 47.6 | 5.4 | 47.9 | 2.9 | S |
750 to 999 lbs | S | S | S | S | S | S | 27.9 |
1,000 to 9,999 lbs | S | S | S | S | S | S | 31.6 |
10,000 to 49,999 lbs | – | – | – | – | – | – | – |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | – | – | – | – | – | – | – |
Truck and rail
Shipment Weight | 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 shipment sizes | S | S | S | S | S | S | 26.3 |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | – | – | – | – | – | – | – |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | S | S | S | S | S | S | 27.9 |
10,000 to 49,999 lbs | 48.6 | 9.8 | S | S | S | S | 26.6 |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | – | – | – | – | – | – | – |
Truck and water
Shipment Weight | 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 shipment sizes | S | S | S | S | S | S | 31.6 |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | – | – | – | – | – | – | – |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | S | S | S | S | S | S | 31.6 |
10,000 to 49,999 lbs | – | – | – | – | – | – | – |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | – | – | – | – | – | – | – |
Rail and water
Shipment Weight | 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 shipment sizes | – | – | – | – | – | – | – |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | – | – | – | – | – | – | – |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | – | – | – | – | – | – | – |
10,000 to 49,999 lbs | – | – | – | – | – | – | – |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | – | – | – | – | – | – | – |
Other Multiple modes
Shipment Weight | 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 shipment sizes | S | S | S | S | S | S | 31.6 |
Less than 50 lbs | – | – | – | – | – | – | – |
50 to 99 lbs | – | – | – | – | – | – | – |
100 to 499 lbs | – | – | – | – | – | – | – |
500 to 749 lbs | – | – | – | – | – | – | – |
750 to 999 lbs | – | – | – | – | – | – | – |
1,000 to 9,999 lbs | – | – | – | – | – | – | – |
10,000 to 49,999 lbs | – | – | – | – | – | – | – |
50,000 to 99,999 lbs | – | – | – | – | – | – | – |
100,000 lbs or more | S | S | S | S | S | S | 31.6 |
Other and unknown modes
Shipment Weight | 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 shipment sizes | 31.0 | – | S | S | S | S | S |
Less than 50 lbs | S | S | S | S | 34.7 | 0.4 | S |
50 to 99 lbs | 40.6 | 1.8 | 38.0 | 1.5 | 42.7 | 0.3 | S |
100 to 499 lbs | 31.3 | 4.0 | 28.4 | 3.9 | 31.2 | 1.1 | 35.3 |
500 to 749 lbs | S | S | S | S | S | S | 43.9 |
750 to 999 lbs | S | S | S | S | S | S | 34.5 |
1,000 to 9,999 lbs | 41.2 | 7.1 | 37.9 | 8.2 | 39.7 | 13.4 | 28.1 |
10,000 to 49,999 lbs | S | S | S | S | S | S | 33.6 |
50,000 to 99,999 lbs | S | S | S | S | S | S | 29.8 |
100,000 lbs or more | 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, Individual State Data, December 2004.