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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 21.0 – 10.9 – 15.6 –
Less than 50 miles 18.3 3.8 26.7 6.1 18.9 1.0
50 to 99 miles 24.3 1.1 21.4 1.5 24.6 0.7
100 to 249 miles 15.8 2.3 17.8 3.9 17.9 3.0
250 to 499 miles 23.4 1.8 23.1 3.7 22.3 3.1
500 to 749 miles 42.3 2.8 18.2 1.6 19.0 2.5
750 to 999 miles 45.1 1.0 33.2 0.8 33.6 2.2
1,000 to 1,499 miles 21.2 0.2 32.1 0.1 36.5 0.8
1,500 to 1,999 miles 35.5 0.9 28.9 0.2 31.3 1.4
2,000 miles or more 36.9 0.3 37.2 – 36.8 0.2

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 23.8 – 10.8 – 16.5 –
Less than 50 miles 19.2 3.8 9.7 4.5 13.8 0.8
50 to 99 miles 28.0 1.1 21.8 2.1 25.0 0.8
100 to 249 miles 18.5 2.5 17.8 3.6 17.9 3.2
250 to 499 miles 26.4 1.9 23.4 3.6 22.6 3.2
500 to 749 miles 47.7 3.2 20.3 1.6 21.3 2.9
750 to 999 miles 48.5 1.0 36.3 0.6 38.2 1.5
1,000 to 1,499 miles 24.9 0.3 32.4 0.1 36.8 0.8
1,500 to 1,999 miles 40.4 0.9 30.0 0.2 32.4 1.5
2,000 miles or more 42.5 0.3 38.6 – 38.6 0.2

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 26.2 – 6.3 – 20.7 –
Less than 50 miles 20.2 4.1 8.9 5.1 14.2 1.7
50 to 99 miles 28.2 1.2 19.4 2.2 18.4 1.6
100 to 249 miles 19.6 1.9 12.0 1.4 11.4 2.5
250 to 499 miles 28.6 2.0 35.5 3.4 36.3 5.1
500 to 749 miles S S 41.9 1.8 40.9 2.5
750 to 999 miles S S 48.3 0.7 46.8 1.3
1,000 to 1,499 miles 27.7 0.3 24.8 0.1 24.4 0.5
1,500 to 1,999 miles 42.3 0.9 23.2 0.2 22.3 2.2
2,000 miles or more 44.1 0.3 38.8 – 38.8 1.1

Rail

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 – 23.2 – 23.9 –
Less than 50 miles 46.3 1.7 S S S S
50 to 99 miles 46.5 1.5 S S S S
100 to 249 miles 18.5 3.2 25.6 5.1 24.5 3.8
250 to 499 miles 18.9 3.3 29.0 5.0 27.7 5.2
500 to 749 miles 18.1 1.7 30.9 3.0 32.5 4.4
750 to 999 miles 30.3 1.8 S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 46.7 1.5 S S S S
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 44.1 – 30.5 – 24.9 –
Less than 50 miles S S 45.9 8.3 37.3 0.4
50 to 99 miles S S S S S S
100 to 249 miles S S 47.0 11.7 37.1 9.3
250 to 499 miles 41.1 5.1 S S S S
500 to 749 miles 36.2 9.6 44.8 8.7 45.3 11.6
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 47.0 0.7 S S S S
2,000 miles or more S S S S 48.1 0.6

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 28.0 – 31.6 – 35.1 –
Less than 50 miles S S S S S S
50 to 99 miles S S 35.1 0.8 35.3 0.2
100 to 249 miles 41.9 2.7 48.4 8.7 44.6 8.1
250 to 499 miles 35.4 2.8 35.9 7.0 42.8 7.7
500 to 749 miles 21.7 2.9 S S S S
750 to 999 miles 32.5 4.5 S S S S
1,000 to 1,499 miles 29.2 1.8 30.5 0.2 33.0 0.3
1,500 to 1,999 miles 24.9 2.1 25.9 4.2 26.7 7.7
2,000 miles or more 32.1 0.6 32.2 0.3 30.2 1.0

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 31.2 – 24.5 – 25.2 –
Less than 50 miles S S 36.5 1.0 40.0 –
50 to 99 miles S S 35.1 2.2 35.3 0.3
100 to 249 miles 44.1 2.6 26.5 1.9 25.8 1.3
250 to 499 miles 35.6 2.5 21.6 2.6 21.5 3.0
500 to 749 miles 24.0 2.9 30.2 2.3 30.4 2.2
750 to 999 miles 27.9 0.9 30.0 1.2 29.8 1.4
1,000 to 1,499 miles 30.5 2.2 15.3 0.6 15.7 1.0
1,500 to 1,999 miles 34.1 1.2 32.1 1.5 31.3 3.7
2,000 miles or more 32.6 0.6 34.9 0.5 34.9 2.1

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 S S 35.4 – 37.5 –
Less than 50 miles S S S S S S
50 to 99 miles – – – – – –
100 to 249 miles 38.3 10.6 S S 50.0 9.1
250 to 499 miles S S 48.6 8.2 S S
500 to 749 miles 43.1 7.0 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 31.6 11.6 32.2 11.8 32.3 12.7
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 34.1 – S S S S
Less than 50 miles 41.2 9.2 S S S S
50 to 99 miles S S S S S S
100 to 249 miles S S 49.4 2.3 S S
250 to 499 miles S S 30.5 1.7 30.7 4.4
500 to 749 miles 28.9 7.5 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.