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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 6.2 – 14.6 – 10.8 –
Less than 50 miles 9.2 2.7 17.8 2.8 14.7 1.0
50 to 99 miles 10.8 0.8 8.5 1.6 8.4 0.7
100 to 249 miles 13.6 1.7 32.8 1.3 34.6 4.2
250 to 499 miles 15.9 1.1 21.7 1.0 23.6 3.4
500 to 749 miles 31.7 1.4 38.5 1.0 36.5 3.4
750 to 999 miles 9.1 1.1 28.8 1.2 29.8 4.8
1,000 to 1,499 miles 14.7 0.8 38.6 0.4 37.7 3.9
1,500 to 1,999 miles 25.1 0.4 41.2 – 41.2 0.5
2,000 miles or more 21.6 0.9 24.1 0.2 24.3 1.7

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 8.1 – 14.8 – 11.0 –
Less than 50 miles 10.1 2.8 18.1 2.8 14.7 1.0
50 to 99 miles 13.1 1.1 8.6 1.6 8.5 0.7
100 to 249 miles 17.6 2.6 33.6 1.4 35.5 4.3
250 to 499 miles 22.5 1.0 21.9 0.9 24.1 3.4
500 to 749 miles 38.4 1.6 39.0 1.0 37.0 3.5
750 to 999 miles 19.2 1.6 29.8 1.3 30.8 4.9
1,000 to 1,499 miles 18.4 0.6 39.3 0.4 38.2 3.9
1,500 to 1,999 miles 34.1 0.3 48.5 – 48.3 0.5
2,000 miles or more 24.4 0.5 25.0 0.2 25.4 1.7

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 8.5 – 17.3 – 13.4 –
Less than 50 miles 11.0 2.8 20.8 2.9 16.1 1.9
50 to 99 miles 13.1 1.1 8.6 2.3 8.5 2.2
100 to 249 miles 17.8 2.8 35.4 1.5 37.6 4.8
250 to 499 miles 21.3 0.9 21.7 0.6 24.4 1.7
500 to 749 miles 39.2 1.7 42.4 1.0 40.9 3.7
750 to 999 miles 21.0 1.6 25.0 0.6 25.4 3.7
1,000 to 1,499 miles 20.0 0.6 14.4 – 15.1 0.9
1,500 to 1,999 miles 37.9 0.1 48.9 – 48.8 0.5
2,000 miles or more 32.9 0.4 26.1 0.1 25.6 1.6

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 23.8 – 23.1 – 46.2 –
Less than 50 miles 41.7 14.0 41.0 14.3 41.1 10.8
50 to 99 miles – – – – – –
100 to 249 miles S S S S S S
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 49.4 5.9 S S S S
1,500 to 1,999 miles – – – – – –
2,000 miles or more S S S S S S

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 23.3 – 41.5 – S S
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 47.6 1.1 S S S S
250 to 499 miles S S S S S S
500 to 749 miles 32.6 1.7 S S S S
750 to 999 miles 39.3 4.5 S S S S
1,000 to 1,499 miles 33.0 3.9 S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more 40.0 6.6 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 15.7 – S S 29.1 –
Less than 50 miles 21.3 1.4 S S 46.3 0.6
50 to 99 miles 31.7 2.2 29.4 2.2 31.0 0.6
100 to 249 miles 24.5 3.2 42.4 5.9 45.2 2.0
250 to 499 miles 34.6 2.0 S S S S
500 to 749 miles 24.9 1.1 21.6 1.3 21.2 0.4
750 to 999 miles 24.1 2.7 34.8 4.7 34.5 4.1
1,000 to 1,499 miles 22.7 5.1 43.4 3.8 46.9 3.7
1,500 to 1,999 miles 24.8 0.5 40.2 1.5 39.2 2.5
2,000 miles or more 33.9 3.5 25.9 2.8 27.1 7.0

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 16.1 – 28.5 – 32.6 –
Less than 50 miles 23.8 1.5 30.3 2.3 32.9 0.2
50 to 99 miles 31.7 2.1 29.4 2.0 31.0 0.5
100 to 249 miles 24.5 3.2 42.4 4.8 45.2 1.9
250 to 499 miles 34.6 2.0 S S S S
500 to 749 miles 24.9 1.0 21.6 1.5 21.2 1.0
750 to 999 miles 24.1 3.4 34.8 3.0 34.5 3.3
1,000 to 1,499 miles 22.7 5.0 43.4 2.8 46.9 3.6
1,500 to 1,999 miles 24.8 0.6 40.2 1.4 39.2 2.6
2,000 miles or more 30.8 1.8 32.7 1.7 33.3 4.0

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 S S S S S S
Less than 50 miles S S S S S S
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 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 29.7 – 32.4 – 37.3 –
Less than 50 miles 20.7 8.5 35.7 8.2 S S
50 to 99 miles S S S S S S
100 to 249 miles 49.2 3.1 S S S S
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 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, Metropolitan Data, December 2004.