Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for CBSA of Origin: 2002

Table B-4. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Shipment Size for CBSA of Origin: 2002

[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]

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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 17.1 7.1 14.1 6.9
Less than 50 lbs 21.8 3.3 18.7 8.8 0.2 5.8
50 to 99 lbs 10.8 0.6 20.2 25.2 0.2 17.3
100 to 499 lbs 13.1 1.8 22.8 0.3 14.8 0.7 19.3
500 to 749 lbs 17.3 0.7 23.1 0.1 21.4 0.3 39.3
750 to 999 lbs 14.5 0.4 14.5 13.0 0.1 14.8
1,000 to 9,999 lbs 13.4 2.0 9.1 1.0 12.1 1.5 16.0
10,000 to 49,999 lbs 38.8 4.5 7.9 3.5 12.1 3.7 10.9
50,000 to 99,999 lbs 17.6 0.4 24.0 4.4 43.3 2.4 32.1
100,000 lbs or more 21.1 1.0 19.8 5.6 24.5 5.4 45.0

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 21.5 7.8 11.4 20.5
Less than 50 lbs 15.7 0.8 37.8 13.4 42.9
50 to 99 lbs 21.8 0.6 34.1 22.0 47.7
100 to 499 lbs 18.5 2.2 27.2 0.3 18.0 0.6 29.1
500 to 749 lbs 18.5 0.9 24.1 0.1 21.7 0.3 39.5
750 to 999 lbs 16.0 0.4 15.7 13.5 0.1 16.2
1,000 to 9,999 lbs 13.7 2.7 10.4 1.0 15.0 1.6 18.2
10,000 to 49,999 lbs 39.9 4.9 8.1 3.5 12.2 2.6 11.8
50,000 to 99,999 lbs 17.3 0.5 24.4 4.5 24.5 1.8 16.9
100,000 lbs or more 21.7 1.3 20.7 5.8 21.0 4.9 45.2

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 21.8 11.3 13.7 20.6
Less than 50 lbs 20.7 0.9 38.9 16.5 45.2
50 to 99 lbs 23.1 0.6 34.4 24.1 S
100 to 499 lbs 19.2 2.4 27.3 0.4 18.5 0.7 29.0
500 to 749 lbs 19.2 1.0 24.1 0.2 21.9 0.4 39.6
750 to 999 lbs 15.7 0.5 15.8 0.1 10.2 0.1 14.4
1,000 to 9,999 lbs 13.7 2.9 10.5 1.4 15.1 2.1 18.2
10,000 to 49,999 lbs 40.1 5.2 8.2 3.8 12.3 3.2 11.8
50,000 to 99,999 lbs 17.7 0.6 24.5 4.3 27.6 1.9 17.3
100,000 lbs or more 32.6 0.6 26.3 3.0 45.0 4.9 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 35.5 39.3 46.6 11.4
Less than 50 lbs S S S S S S 30.0
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 31.1
10,000 to 49,999 lbs S S S S S S 39.2
50,000 to 99,999 lbs S S 47.9 2.6 47.1 4.0 30.0
100,000 lbs or more 49.8 12.1 42.5 10.6 S S 16.8

All other 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 24.2 33.2 32.9 10.3
Less than 50 lbs 35.2 4.4 28.2 26.9 0.4 11.8
50 to 99 lbs 32.8 2.0 42.8 S S 10.1
100 to 499 lbs S S 40.9 45.7 4.1 9.7
500 to 749 lbs S S 45.4 S S 27.2
750 to 999 lbs S S S S S S 31.2
1,000 to 9,999 lbs 41.2 2.2 S S 48.9 0.3 26.5
10,000 to 49,999 lbs S S S S S S 28.1
50,000 to 99,999 lbs S S S S S S 31.5
100,000 lbs or more 28.6 8.4 33.1 0.1 32.8 4.5 28.7

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 19.6 38.9 S S 4.1
Less than 50 lbs 24.6 3.9 9.7 6.5 9.1 9.0 4.0
50 to 99 lbs 17.8 1.5 19.6 3.4 27.3 3.8 8.3
100 to 499 lbs 26.2 3.0 26.8 4.5 20.3 4.3 10.5
500 to 749 lbs 36.8 0.5 47.2 0.9 22.0 0.5 48.4
750 to 999 lbs 43.9 0.4 49.1 0.4 25.7 0.2 S
1,000 to 9,999 lbs S S S S S S 30.0
10,000 to 49,999 lbs S S 48.3 5.8 S S 23.6
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 26.8

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 19.8 14.8 12.1 4.1
Less than 50 lbs 24.6 4.0 9.7 3.7 9.1 4.5 4.0
50 to 99 lbs 17.7 1.5 19.6 2.8 27.3 3.8 8.3
100 to 499 lbs 26.2 3.0 26.8 3.9 20.3 4.5 10.4
500 to 749 lbs 36.9 0.5 47.7 1.4 22.0 0.7 47.9
750 to 999 lbs 43.9 0.4 49.1 1.7 25.7 0.2 S
1,000 to 9,999 lbs
10,000 to 49,999 lbs
50,000 to 99,999 lbs
100,000 lbs or more

All 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 43.5 S S S S 21.0
Less than 50 lbs
50 to 99 lbs S S S S S S 31.6
100 to 499 lbs S S S S S S 31.6
500 to 749 lbs S S S S S S 31.6
750 to 999 lbs
1,000 to 9,999 lbs S S S S S S 30.0
10,000 to 49,999 lbs S S 48.3 18.8 S S 23.6
50,000 to 99,999 lbs
100,000 lbs or more S S S S S S 26.8

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 27.3 48.6 S S 32.3
Less than 50 lbs 36.3 6.0 26.2 0.5 S S 37.0
50 to 99 lbs 29.4 0.9 S S 44.8 S
100 to 499 lbs 40.6 3.0 41.1 2.2 S S 22.3
500 to 749 lbs S S S S S S 46.9
750 to 999 lbs 48.7 0.8 S S S S S
1,000 to 9,999 lbs 18.0 6.7 S S S S 37.5
10,000 to 49,999 lbs S S S S 28.8 16.8 S
50,000 to 99,999 lbs S S S S S S 31.6
100,000 lbs or more 0.3 33.3

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.