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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 6.8 – 18.1 – 29.6 –
Less than 50 miles 16.6 3.7 21.6 4.0 15.9 0.8
50 to 99 miles 17.3 1.3 26.1 1.5 26.6 0.9
100 to 249 miles 10.1 1.9 22.7 1.6 29.6 2.7
250 to 499 miles 17.0 2.4 39.9 2.3 42.3 6.5
500 to 749 miles 13.7 1.4 21.9 0.7 21.9 2.3
750 to 999 miles 21.7 0.6 S S S S
1,000 to 1,499 miles 15.6 0.9 22.2 0.5 22.6 3.4
1,500 to 1,999 miles 26.5 0.2 27.6 – 28.9 0.2
2,000 miles or more 15.9 1.1 29.9 0.5 28.8 5.6

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 5.7 – 17.7 – 34.1 –
Less than 50 miles 15.1 3.7 21.7 4.2 16.2 1.0
50 to 99 miles 19.4 1.4 26.2 1.5 26.7 1.0
100 to 249 miles 9.4 2.1 22.8 1.4 29.8 3.0
250 to 499 miles 15.1 2.2 25.2 1.6 24.8 3.6
500 to 749 miles 16.6 1.5 22.6 0.6 22.6 2.1
750 to 999 miles 28.3 0.7 S S S S
1,000 to 1,499 miles 14.3 0.6 23.1 0.5 23.5 3.3
1,500 to 1,999 miles 29.8 0.1 26.0 – 28.4 0.2
2,000 miles or more 19.2 1.0 33.8 0.5 32.9 5.7

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 5.2 – 16.8 – 31.1 –
Less than 50 miles 14.9 3.8 22.0 3.7 14.7 1.4
50 to 99 miles 20.5 1.4 25.7 1.6 26.6 1.2
100 to 249 miles 11.2 2.4 10.3 1.4 10.2 4.4
250 to 499 miles 14.5 2.2 17.7 1.2 17.7 3.3
500 to 749 miles 16.7 1.6 21.7 0.7 22.0 2.5
750 to 999 miles 29.2 0.8 S S S S
1,000 to 1,499 miles 16.1 0.7 24.5 0.5 25.1 3.0
1,500 to 1,999 miles 27.1 0.1 29.8 – 33.1 0.2
2,000 miles or more 22.7 1.0 41.4 0.5 41.2 6.0

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 30.0 – S S 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 48.5 8.2 S S S S
250 to 499 miles 38.7 5.8 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 42.0 7.8 31.3 8.4 31.3 10.6
1,500 to 1,999 miles S S S S S S
2,000 miles or more 42.4 5.0 46.5 4.9 46.9 7.5

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 23.0 – S S 47.3 –
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 43.1 13.0 S S 27.2 17.1
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 46.6 6.0 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 30.4 – S S S S
Less than 50 miles S S 42.7 3.0 47.1 0.1
50 to 99 miles S S 47.2 2.5 42.1 0.4
100 to 249 miles 29.7 4.8 21.5 5.4 21.3 1.7
250 to 499 miles 40.2 6.8 S S S S
500 to 749 miles 34.6 2.7 40.8 5.6 40.0 5.5
750 to 999 miles 31.7 1.2 24.8 2.3 25.3 2.7
1,000 to 1,499 miles 35.8 2.1 34.3 2.7 36.0 4.4
1,500 to 1,999 miles 44.4 0.8 S S S S
2,000 miles or more 32.3 2.6 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 34.4 – 27.6 – 24.6 –
Less than 50 miles S S 42.7 2.2 47.1 –
50 to 99 miles S S 47.2 1.9 42.1 0.3
100 to 249 miles 29.7 4.9 21.5 3.1 21.3 1.1
250 to 499 miles 46.8 3.0 39.0 3.8 39.9 4.5
500 to 749 miles 34.6 2.4 40.8 3.2 40.0 3.0
750 to 999 miles 31.7 1.3 24.8 2.0 25.3 2.7
1,000 to 1,499 miles 35.8 2.0 34.3 1.6 36.0 2.5
1,500 to 1,999 miles 44.4 1.3 S S S S
2,000 miles or more 32.4 2.4 26.4 1.6 26.5 4.6

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 – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles – – – – – –
250 to 499 miles S S S S S S
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 25.9 – S S 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 44.6 14.1 35.6 13.4 34.5 13.9
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 – – – – – –
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.