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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

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 11.7 – 17.9 – 17.4 –
Less than 50 miles 12.6 2.5 26.3 7.1 25.1 2.0
50 to 99 miles 15.5 0.4 20.8 1.1 21.9 0.5
100 to 249 miles 21.7 0.7 17.9 2.4 20.0 1.6
250 to 499 miles 21.9 1.2 37.3 5.5 39.5 9.4
500 to 749 miles 13.7 1.5 27.1 2.0 27.5 2.0
750 to 999 miles 23.0 2.0 25.4 1.4 25.8 4.9
1,000 to 1,499 miles 11.0 1.1 33.1 2.8 33.6 7.6
1,500 to 1,999 miles 28.8 1.5 45.6 0.2 46.2 1.3
2,000 miles or more 38.8 – 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 12.6 – 17.6 – 17.5 –
Less than 50 miles 11.5 2.7 26.2 7.1 25.0 2.1
50 to 99 miles 14.5 0.5 19.9 1.1 20.1 0.5
100 to 249 miles 23.8 0.9 18.2 2.5 20.7 1.7
250 to 499 miles 25.1 1.8 37.7 5.6 39.8 9.7
500 to 749 miles 17.9 1.7 28.5 2.0 29.0 2.1
750 to 999 miles 30.8 2.6 26.8 1.4 27.3 5.0
1,000 to 1,499 miles 16.5 1.1 33.6 2.8 34.0 7.9
1,500 to 1,999 miles 43.5 1.9 48.8 0.2 49.3 1.2
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 9.5 – 22.8 – 18.4 –
Less than 50 miles 11.5 2.4 26.3 5.6 25.0 3.6
50 to 99 miles 16.6 0.7 27.4 1.3 28.3 0.9
100 to 249 miles 26.7 1.3 34.4 1.8 32.6 3.1
250 to 499 miles 27.2 2.0 20.0 1.3 20.6 2.7
500 to 749 miles 20.0 1.9 22.7 2.1 20.7 3.1
750 to 999 miles 15.7 1.6 23.4 1.5 23.0 3.4
1,000 to 1,499 miles 19.5 1.2 38.0 0.6 39.5 2.6
1,500 to 1,999 miles 19.5 0.4 30.4 0.2 30.7 1.0
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 29.8 – 21.7 – 22.5 –
Less than 50 miles S S 45.5 3.4 46.9 0.1
50 to 99 miles S S S S S S
100 to 249 miles 36.6 11.0 38.6 13.7 39.3 15.1
250 to 499 miles 27.2 8.1 43.4 14.2 43.9 13.2
500 to 749 miles 44.0 2.3 38.4 2.9 38.4 2.8
750 to 999 miles S S 39.2 1.9 39.2 4.7
1,000 to 1,499 miles 38.8 4.1 40.4 8.1 40.4 11.2
1,500 to 1,999 miles S S 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 48.4 – S S 38.2 –
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 47.4 0.9 48.0 2.6 S S
500 to 749 miles 42.1 2.6 S S S S
750 to 999 miles S S 18.8 11.0 18.9 8.7
1,000 to 1,499 miles 33.9 2.9 30.6 4.7 30.8 4.7
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 15.4 – 21.4 – 30.2 –
Less than 50 miles 24.0 3.4 37.6 3.7 38.1 0.2
50 to 99 miles 24.9 1.0 36.1 0.8 39.4 0.1
100 to 249 miles 22.6 2.2 S S S S
250 to 499 miles 17.6 1.4 43.1 1.9 45.7 1.3
500 to 749 miles 25.5 1.4 S S S S
750 to 999 miles 23.4 3.3 S S S S
1,000 to 1,499 miles 16.3 1.9 29.0 6.4 29.2 7.6
1,500 to 1,999 miles 17.1 1.8 25.2 1.5 24.9 3.9
2,000 miles or more 48.9 0.4 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 15.9 – 25.1 – 20.4 –
Less than 50 miles 24.0 3.4 37.2 3.3 38.1 0.1
50 to 99 miles 24.9 1.0 36.1 0.6 39.4 0.1
100 to 249 miles 22.6 2.3 S S S S
250 to 499 miles 17.7 1.4 34.4 1.6 34.0 1.1
500 to 749 miles 25.7 1.4 23.2 1.7 23.0 1.6
750 to 999 miles 24.4 3.1 17.6 3.7 18.1 3.3
1,000 to 1,499 miles 16.3 1.9 20.4 2.6 20.1 2.8
1,500 to 1,999 miles 17.1 2.1 25.2 1.0 24.9 1.6
2,000 miles or more 45.5 – 38.5 – 44.1 0.2

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 42.0 – 42.0 – 44.3 –
Less than 50 miles S S S S S S
50 to 99 miles – – – – – –
100 to 249 miles – – – – – –
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 38.9 10.9 39.6 10.8 39.5 11.5
1,500 to 1,999 miles – – – – – –
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 24.3 – 45.6 – 37.7 –
Less than 50 miles 30.0 8.5 S S S S
50 to 99 miles 48.7 1.9 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 36.6 1.5 S S S S
750 to 999 miles 35.4 8.1 S S 48.6 9.4
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S 41.7 3.2 40.5 11.0
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.