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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 13.0 – 19.6 – 20.6 –
Less than 50 miles 20.5 4.0 27.2 6.0 19.0 1.0
50 to 99 miles 16.7 0.9 46.3 2.2 47.0 0.8
100 to 249 miles 10.5 2.5 24.4 2.1 23.9 1.5
250 to 499 miles 28.8 2.8 17.5 2.9 18.2 4.5
500 to 749 miles 23.0 0.8 26.6 0.6 25.9 1.5
750 to 999 miles 14.5 0.6 28.5 0.4 27.1 1.4
1,000 to 1,499 miles 26.7 0.6 49.3 0.6 47.4 2.5
1,500 to 1,999 miles 19.8 0.6 27.9 0.2 27.7 2.3
2,000 miles or more 35.0 0.5 39.8 0.1 39.6 1.3

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 15.0 – 24.1 – 23.8 –
Less than 50 miles 27.1 4.3 33.4 6.4 18.5 1.2
50 to 99 miles 19.6 1.0 48.0 2.3 48.9 1.0
100 to 249 miles 12.0 2.6 30.2 2.9 29.9 1.7
250 to 499 miles 37.4 3.7 20.0 2.5 19.9 4.7
500 to 749 miles 30.8 1.1 26.8 0.6 26.8 1.3
750 to 999 miles 21.1 0.5 21.2 0.2 21.3 1.2
1,000 to 1,499 miles 31.8 0.7 35.6 0.4 34.5 2.0
1,500 to 1,999 miles 33.3 0.6 41.6 0.3 40.2 2.2
2,000 miles or more 41.1 0.5 39.9 0.1 39.8 1.8

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 15.6 – 24.6 – 27.3 –
Less than 50 miles 27.4 4.3 32.3 6.5 19.1 1.3
50 to 99 miles 19.8 1.0 49.6 2.4 S S
100 to 249 miles 12.1 2.7 30.6 3.1 30.5 2.1
250 to 499 miles 38.3 3.8 23.9 2.0 23.3 2.6
500 to 749 miles 31.1 1.1 27.4 0.6 27.4 1.1
750 to 999 miles 21.9 0.6 21.8 0.2 22.1 1.5
1,000 to 1,499 miles 38.3 0.3 36.0 0.4 34.9 2.1
1,500 to 1,999 miles 37.1 0.6 45.4 0.2 43.8 1.8
2,000 miles or more 41.3 0.5 40.0 0.1 39.9 1.9

Rail

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 38.6 – 39.0 –
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 38.4 13.5 49.0 16.8 S S
500 to 749 miles 40.4 9.4 40.9 10.0 39.6 9.7
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 – – – – – –

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 39.2 – S S 39.6 –
Less than 50 miles S S S S S S
50 to 99 miles 34.9 2.2 42.2 2.4 39.6 6.1
100 to 249 miles S S S S S S
250 to 499 miles S S S S S S
500 to 749 miles 49.0 10.5 S S S S
750 to 999 miles 30.0 7.6 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 38.1 1.0 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 21.0 – 30.9 – 49.8 –
Less than 50 miles S S 48.4 5.0 43.9 0.3
50 to 99 miles 41.8 1.7 29.4 1.0 30.0 0.3
100 to 249 miles 39.4 3.1 35.7 3.1 41.8 1.4
250 to 499 miles 18.1 3.1 22.8 5.3 26.0 4.8
500 to 749 miles 24.2 5.5 21.2 2.9 22.7 4.2
750 to 999 miles 22.2 2.2 46.7 3.5 49.2 3.2
1,000 to 1,499 miles 25.5 1.0 14.5 0.3 14.7 0.7
1,500 to 1,999 miles 30.1 1.9 S S S S
2,000 miles or more 35.4 1.4 48.1 1.3 47.8 4.9

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 22.3 – 22.6 – 26.5 –
Less than 50 miles S S 49.1 4.7 44.1 0.3
50 to 99 miles 41.8 1.7 29.4 1.2 30.0 0.3
100 to 249 miles 41.8 3.1 39.6 4.4 45.3 2.4
250 to 499 miles 18.7 3.6 23.7 4.6 24.5 3.0
500 to 749 miles 24.6 5.6 27.5 2.2 28.9 2.9
750 to 999 miles 22.5 2.5 47.0 2.8 47.8 5.1
1,000 to 1,499 miles 25.5 1.1 14.5 0.5 14.7 1.1
1,500 to 1,999 miles 34.1 1.7 S S S S
2,000 miles or more 35.0 1.5 44.8 1.2 46.9 4.1

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 45.4 – 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 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 – – – – – –
1,500 to 1,999 miles S S S S S S
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 38.1 – 39.0 – S S
Less than 50 miles 38.8 13.3 36.9 10.3 41.0 14.2
50 to 99 miles S S S S S S
100 to 249 miles 36.0 3.1 S S 48.9 4.9
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 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.