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Table B–3. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Distance Shipped for State 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

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 3.7 – 8.0 – 8.0 –
Less than 50 miles 5.3 1.3 9.8 2.9 11.0 0.4
50 to 99 miles 18.0 1.3 26.1 2.8 25.0 1.2
100 to 249 miles 9.9 1.6 16.2 1.8 18.2 2.1
250 to 499 miles 8.7 0.9 12.1 1.6 10.7 3.1
500 to 749 miles 8.0 0.5 8.3 0.2 8.4 0.8
750 to 999 miles 8.2 0.6 14.5 0.3 13.5 1.5
1,000 to 1,499 miles 12.7 1.2 19.2 0.8 20.5 4.5
1,500 to 1,999 miles 18.0 0.5 18.3 0.1 19.9 1.0
2,000 miles or more 32.7 – S S S S

Single modes

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 4.5 – 8.4 – 8.3 –
Less than 50 miles 6.0 1.3 10.1 2.8 11.2 0.5
50 to 99 miles 18.4 1.2 26.1 2.8 25.1 1.2
100 to 249 miles 11.4 1.6 17.0 1.9 19.1 2.2
250 to 499 miles 9.7 1.0 12.3 1.7 10.7 3.1
500 to 749 miles 5.3 0.3 9.0 0.2 8.8 0.8
750 to 999 miles 7.6 0.6 15.3 0.4 14.4 1.6
1,000 to 1,499 miles 10.9 1.0 19.7 0.9 21.1 4.5
1,500 to 1,999 miles 13.8 0.3 16.2 – 16.9 0.9
2,000 miles or more S S S S S S

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 4.6 – 8.9 – 7.8 –
Less than 50 miles 6.1 1.3 12.2 3.4 13.5 0.9
50 to 99 miles 8.3 0.5 23.0 2.3 22.1 0.8
100 to 249 miles 12.1 1.8 12.3 1.2 12.4 1.4
250 to 499 miles 10.5 1.0 12.1 0.8 11.5 1.7
500 to 749 miles 7.0 0.3 10.6 0.3 10.7 1.2
750 to 999 miles 6.4 0.6 5.9 0.2 6.0 0.8
1,000 to 1,499 miles 10.6 0.8 17.4 0.4 17.6 2.2
1,500 to 1,999 miles 17.0 0.3 19.5 – 19.6 0.9
2,000 miles or more S S S S S S

For-hire truck

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 4.4 – 10.9 – 9.8 –
Less than 50 miles 7.5 1.6 16.4 4.0 16.7 0.4
50 to 99 miles 19.7 0.8 25.9 1.7 25.1 0.6
100 to 249 miles 18.1 2.4 10.8 1.7 12.4 1.2
250 to 499 miles 13.0 1.9 9.5 1.3 9.2 1.3
500 to 749 miles 6.6 0.6 11.7 0.8 11.9 1.3
750 to 999 miles 7.1 0.8 7.7 0.3 7.7 0.7
1,000 to 1,499 miles 10.2 1.8 20.1 1.0 20.3 2.9
1,500 to 1,999 miles 19.9 0.5 19.9 0.2 20.0 1.0
2,000 miles or more S S S S S S

Private truck

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 8.1 – 13.1 – 17.1 –
Less than 50 miles 8.4 2.1 16.4 4.6 16.6 2.7
50 to 99 miles 8.7 0.5 29.7 3.3 28.1 2.4
100 to 249 miles 15.8 2.5 22.8 1.9 23.9 2.9
250 to 499 miles 16.7 0.8 31.3 0.9 30.2 2.8
500 to 749 miles 31.1 0.5 30.5 0.2 31.0 1.4
750 to 999 miles 24.9 0.4 23.1 0.1 22.7 1.7
1,000 to 1,499 miles 47.1 0.7 22.6 – 21.8 0.9
1,500 to 1,999 miles 49.7 0.2 24.6 – 24.7 0.4
2,000 miles or more S S S S S S

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 14.2 – 14.9 – 13.3 –
Less than 50 miles 21.7 2.9 48.1 4.2 48.4 0.3
50 to 99 miles 36.1 2.2 33.7 6.7 36.1 1.6
100 to 249 miles 19.9 0.8 42.9 6.1 46.5 4.0
250 to 499 miles 16.9 1.9 41.1 5.7 36.7 4.2
500 to 749 miles 14.7 1.4 19.7 0.7 19.8 1.4
750 to 999 miles 26.7 2.9 19.9 1.1 19.9 2.1
1,000 to 1,499 miles 13.9 2.9 26.6 5.3 26.4 6.1
1,500 to 1,999 miles 42.6 1.0 10.1 0.3 10.4 0.7
2,000 miles or more S S S S S S

Water

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 21.2 – 20.2 – 36.3 –
Less than 50 miles 24.8 6.8 24.8 5.6 S S
50 to 99 miles 42.6 3.7 32.7 3.7 36.1 1.7
100 to 249 miles 36.5 2.8 34.3 3.4 39.6 5.8
250 to 499 miles 40.6 1.1 32.7 0.8 35.8 1.8
500 to 749 miles 38.1 0.7 49.8 0.9 41.2 1.6
750 to 999 miles 34.8 3.3 37.1 2.0 33.4 7.9
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more – – – – – –

Shallow draft

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 26.6 – 20.8 – 22.5 –
Less than 50 miles 31.9 6.7 27.3 5.4 S S
50 to 99 miles 49.6 6.3 39.4 3.9 43.9 2.3
100 to 249 miles 40.6 4.4 27.8 3.5 26.7 7.7
250 to 499 miles 40.6 2.4 33.1 1.4 36.5 6.4
500 to 749 miles 38.1 0.9 49.8 1.1 41.2 1.8
750 to 999 miles 47.2 1.6 S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

Great Lakes

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances – – – – – –
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles – – – – – –
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

Deep draft

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 32.4 – 37.1 – S S
Less than 50 miles 40.4 10.3 32.4 12.7 S S
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles S S S S S S
500 to 749 miles – – – – – –
750 to 999 miles 43.8 9.1 44.2 8.5 42.3 12.0
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more – – – – – –

Air (including truck and air)

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 21.8 – 24.1 – 19.6 –
Less than 50 miles – – – – – –
50 to 99 miles S S S S S S
100 to 249 miles 32.5 1.6 39.6 3.9 47.4 0.8
250 to 499 miles 32.9 2.3 33.6 0.9 22.7 0.4
500 to 749 miles 30.6 3.8 45.8 6.2 38.0 6.1
750 to 999 miles 30.3 6.8 30.3 6.4 32.9 7.4
1,000 to 1,499 miles 43.8 8.4 37.1 5.2 37.6 6.7
1,500 to 1,999 miles 31.8 3.2 30.8 4.0 30.6 3.9
2,000 miles or more S S S S S S

Pipeline

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 15.9 – 18.2 – S S
Less than 50 miles 16.9 4.3 19.6 4.5 S S
50 to 99 miles 39.9 5.2 45.5 4.9 S S
100 to 249 miles 25.8 0.8 27.8 0.9 S S
250 to 499 miles 44.7 4.8 46.3 5.2 S S
500 to 749 miles S S S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more – – – – S S

Multiple modes

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 15.4 – 43.9 – 25.1 –
Less than 50 miles 12.8 1.9 S S S S
50 to 99 miles 13.2 0.6 S S S S
100 to 249 miles 14.6 2.5 S S S S
250 to 499 miles 18.6 1.0 S S S S
500 to 749 miles 18.9 1.0 42.3 1.7 49.1 2.1
750 to 999 miles 20.1 1.9 40.5 6.5 45.9 7.1
1,000 to 1,499 miles 23.5 2.6 18.6 3.8 21.8 8.4
1,500 to 1,999 miles 39.4 2.1 S S S S
2,000 miles or more 32.2 0.1 35.2 0.2 32.4 0.7

Parcel, USPS or courier

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 16.3 – 14.9 – 17.6 –
Less than 50 miles 11.8 1.9 21.0 4.8 18.5 0.3
50 to 99 miles 10.8 0.7 12.7 0.5 13.2 0.1
100 to 249 miles 11.4 2.1 18.4 1.5 18.8 0.8
250 to 499 miles 19.4 1.0 20.7 1.4 20.4 0.9
500 to 749 miles 19.8 1.1 36.7 2.9 37.7 4.2
750 to 999 miles 20.8 2.0 24.9 1.8 25.3 1.9
1,000 to 1,499 miles 24.3 2.6 16.8 2.0 16.1 3.2
1,500 to 1,999 miles 39.2 2.0 18.8 0.4 22.6 1.6
2,000 miles or more 43.1 0.1 38.9 – 38.7 0.3

Truck and rail

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 22.9 – S S 24.2 –
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles S S S S S S
500 to 749 miles 43.3 1.4 S S S S
750 to 999 miles 37.6 8.3 S S S S
1,000 to 1,499 miles 21.0 8.5 24.2 14.0 23.4 11.7
1,500 to 1,999 miles S S S S S S
2,000 miles or more – – – – – –

Truck and water

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 31.7 – 41.3 – 42.7 –
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles – – – – – –
500 to 749 miles S S S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles – – – – – –
2,000 miles or more 25.9 11.4 36.4 11.5 33.1 14.8

Rail and water

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances S S S S S S
Less than 50 miles – – – – – –
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles S S S S S S
1,000 to 1,499 miles – – – – – –
1,500 to 1,999 miles – – – – – –
2,000 miles or more – – – – – –

Other Multiple modes

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances S S S S S S
Less than 50 miles S S S S S S
50 to 99 miles – – – – – –
100 to 249 miles S S S S S S
250 to 499 miles – – – – – –
500 to 749 miles S S S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more – – – – – –

Other and unknown modes

Distance Shipped Value Tons Ton-miles
CV Std. error
of percent		 CV Std. error
of percent		 CV Std. error
of percent
All distances 24.4 – 23.8 – 29.1 –
Less than 50 miles 17.1 5.6 28.1 7.2 23.2 4.8
50 to 99 miles 36.2 3.9 26.6 1.1 28.1 0.6
100 to 249 miles 47.7 3.9 28.9 4.1 26.3 2.4
250 to 499 miles 45.8 1.0 16.6 1.1 17.9 2.7
500 to 749 miles S S S S S S
750 to 999 miles 35.5 2.1 49.2 0.5 S S
1,000 to 1,499 miles 42.4 3.0 49.6 1.3 S S
1,500 to 1,999 miles 44.2 1.8 43.6 0.1 43.0 2.4
2,000 miles or more 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.
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