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Table B-3. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Distance Shipped for CBSA of Origin: 2002

Monday, July 2, 2012

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

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 12.4 – 24.2 – 20.1 –
Less than 50 miles 13.4 2.5 31.1 5.2 28.3 0.8
50 to 99 miles 14.0 1.0 21.6 1.7 26.2 0.8
100 to 249 miles 12.2 2.0 17.6 2.5 17.7 2.5
250 to 499 miles 21.4 1.7 22.9 1.0 24.9 1.2
500 to 749 miles 22.3 2.3 31.9 2.0 30.1 3.5
750 to 999 miles 19.3 0.6 24.0 0.4 23.7 1.1
1,000 to 1,499 miles 38.6 1.7 23.7 0.2 23.8 1.3
1,500 to 1,999 miles 19.1 0.7 22.5 0.5 21.0 2.4
2,000 miles or more 39.4 – 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 11.7 – 24.6 – 21.2 –
Less than 50 miles 14.6 3.1 31.5 5.4 28.4 0.9
50 to 99 miles 17.1 1.1 21.8 1.8 26.4 0.9
100 to 249 miles 14.9 2.0 17.7 2.6 17.9 2.8
250 to 499 miles 18.7 0.9 23.3 1.0 25.8 1.3
500 to 749 miles 20.9 2.1 33.2 2.1 31.5 3.8
750 to 999 miles 21.2 0.7 24.0 0.3 23.8 1.2
1,000 to 1,499 miles 21.8 1.2 27.1 0.2 27.5 1.2
1,500 to 1,999 miles 21.4 0.7 25.3 0.4 23.8 2.1
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 11.9 – 25.2 – 22.8 –
Less than 50 miles 14.6 3.1 31.5 5.4 28.4 1.0
50 to 99 miles 17.1 1.2 21.8 2.0 26.4 1.0
100 to 249 miles 14.9 2.1 17.6 2.4 17.9 2.2
250 to 499 miles 19.7 0.9 25.0 1.0 28.0 1.2
500 to 749 miles 21.1 2.1 34.9 2.1 33.2 3.8
750 to 999 miles 22.0 0.7 26.5 0.3 26.3 1.0
1,000 to 1,499 miles 24.9 1.2 27.4 0.2 27.8 1.3
1,500 to 1,999 miles 20.6 0.7 26.6 0.4 25.2 2.2
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 26.1 – 23.8 – 18.2 –
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles 42.6 10.9 32.7 14.5 31.9 11.5
250 to 499 miles 39.4 9.7 35.5 10.3 33.4 10.0
500 to 749 miles 34.2 7.2 29.2 8.0 27.8 6.9
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 44.9 2.5 S S S S
2,000 miles or more – – – – – –

All other 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 43.2 – S S S S
Less than 50 miles S S S S S S
50 to 99 miles 47.9 0.2 S S S S
100 to 249 miles S S 38.2 6.4 39.5 3.4
250 to 499 miles 30.8 4.8 45.8 4.9 49.3 5.3
500 to 749 miles 47.1 7.4 S S S S
750 to 999 miles 42.3 2.8 32.7 4.8 31.4 5.7
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 S S 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 22.5 – 29.3 – 25.6 –
Less than 50 miles 44.4 1.5 46.5 1.6 S S
50 to 99 miles S S 34.5 1.1 34.5 0.1
100 to 249 miles 26.2 3.8 32.5 4.4 37.7 3.1
250 to 499 miles S S S S S S
500 to 749 miles 23.2 4.9 17.1 3.1 17.4 2.1
750 to 999 miles 28.9 1.0 41.1 2.7 41.5 2.7
1,000 to 1,499 miles 23.3 1.5 26.0 1.6 26.8 2.1
1,500 to 1,999 miles 27.4 2.3 29.5 5.6 29.6 8.0
2,000 miles or more S S S S S S

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 23.3 – 45.0 – 37.7 –
Less than 50 miles 45.6 1.6 S S S S
50 to 99 miles S S 37.6 2.0 39.4 0.3
100 to 249 miles 27.6 3.7 38.3 3.5 37.6 1.3
250 to 499 miles S S S S S S
500 to 749 miles 23.4 4.9 23.3 4.0 23.3 4.3
750 to 999 miles 32.0 1.0 33.2 1.2 33.5 1.4
1,000 to 1,499 miles 24.0 1.6 30.3 2.5 31.2 4.0
1,500 to 1,999 miles 30.1 2.4 S S S S
2,000 miles or more 49.7 – S S S S

All 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 28.1 – 46.5 – 29.3 –
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 44.9 10.0 S S S S
250 to 499 miles S S S S S S
500 to 749 miles 42.7 0.7 S S S S
750 to 999 miles 39.3 7.4 48.3 9.0 47.6 5.7
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 28.7 13.3 31.0 16.8 30.4 13.3
2,000 miles or more S S S S S S

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 S S 30.4 – S S
Less than 50 miles 47.2 15.4 38.2 11.6 44.5 11.1
50 to 99 miles 45.6 3.7 S S S S
100 to 249 miles 41.1 6.9 37.6 4.7 33.2 8.9
250 to 499 miles S S S S 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 – – – – – –

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.