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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 17.0 – 14.6 – 25.7 –
Less than 50 miles 21.6 3.3 18.1 4.0 27.5 1.3
50 to 99 miles 18.6 0.5 14.4 0.5 16.3 0.1
100 to 249 miles 16.1 1.5 25.7 1.9 28.5 1.9
250 to 499 miles 12.6 1.5 22.1 1.9 20.6 2.9
500 to 749 miles 26.2 1.9 11.7 1.6 12.9 3.4
750 to 999 miles 15.2 0.6 49.9 0.7 S S
1,000 to 1,499 miles 31.7 1.3 S S S S
1,500 to 1,999 miles 11.7 1.0 24.5 0.5 24.0 1.9
2,000 miles or more 22.9 0.5 8.8 – 8.6 0.3

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 19.2 – 15.2 – 27.2 –
Less than 50 miles 22.0 3.0 18.1 3.9 27.6 1.3
50 to 99 miles 19.0 0.6 13.2 0.6 14.8 0.2
100 to 249 miles 17.6 1.7 25.3 1.9 28.2 1.9
250 to 499 miles 15.6 1.9 23.8 1.7 21.9 2.6
500 to 749 miles 29.5 2.1 13.1 1.0 14.3 3.4
750 to 999 miles 21.5 0.5 S S S S
1,000 to 1,499 miles 41.3 1.8 S S S S
1,500 to 1,999 miles 9.6 0.7 27.3 0.6 26.8 2.5
2,000 miles or more 39.5 0.4 15.6 – 16.8 0.3

Truck

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 – 15.7 – 13.2 –
Less than 50 miles 25.5 3.0 20.8 4.0 28.1 1.6
50 to 99 miles 17.5 0.6 13.4 0.8 14.9 0.2
100 to 249 miles 17.6 1.9 23.1 1.5 25.2 1.9
250 to 499 miles 15.5 2.1 24.2 2.5 20.9 3.3
500 to 749 miles 31.6 2.3 14.1 0.8 13.9 2.3
750 to 999 miles 23.7 0.5 40.7 0.7 40.4 1.8
1,000 to 1,499 miles 44.4 1.0 35.6 1.1 36.1 3.7
1,500 to 1,999 miles 13.2 0.8 31.9 0.8 31.4 3.2
2,000 miles or more S S 15.6 – 16.8 0.3

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 35.9 – 48.4 – 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 S S S S S S
250 to 499 miles S S 36.8 2.6 41.6 3.2
500 to 749 miles 32.1 10.8 31.7 11.7 38.0 12.7
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 10.9 – 23.6 – 48.8 –
Less than 50 miles 20.8 9.8 24.3 14.6 23.7 10.4
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles 49.5 1.7 S S S S
500 to 749 miles 48.5 6.8 S S 35.2 4.8
750 to 999 miles 36.5 1.9 S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 20.9 1.7 20.4 2.6 21.0 4.4
2,000 miles or more 34.2 1.3 29.0 1.1 32.2 2.8

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 12.4 – 33.9 – 30.0 –
Less than 50 miles 29.3 2.5 39.3 2.3 S S
50 to 99 miles 37.5 0.9 S S S S
100 to 249 miles 36.0 1.9 S S S S
250 to 499 miles 15.8 1.4 14.3 2.9 15.1 1.0
500 to 749 miles 14.8 2.4 S S S S
750 to 999 miles 19.3 1.0 S S S S
1,000 to 1,499 miles 18.7 1.8 38.6 3.8 41.0 4.4
1,500 to 1,999 miles 19.9 2.2 29.9 4.5 29.6 6.1
2,000 miles or more 29.9 1.2 24.7 2.8 25.6 5.7

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 13.0 – 15.0 – 21.1 –
Less than 50 miles 30.1 2.5 32.2 2.7 26.6 0.1
50 to 99 miles 37.6 0.8 31.8 1.5 33.0 0.2
100 to 249 miles 36.7 1.9 35.1 2.5 38.1 1.0
250 to 499 miles 15.8 1.5 14.3 2.4 15.3 1.1
500 to 749 miles 14.4 2.3 14.3 2.6 14.5 2.4
750 to 999 miles 19.0 1.0 40.3 1.6 40.3 1.5
1,000 to 1,499 miles 19.0 1.9 24.2 2.4 23.5 2.7
1,500 to 1,999 miles 20.2 2.2 32.4 3.6 32.2 4.6
2,000 miles or more 32.5 1.2 32.5 0.8 32.4 1.6

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 28.2 – S S 48.9 –
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 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 34.4 10.3 44.6 14.9 43.2 14.1

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 31.0 – 29.3 – S S
Less than 50 miles 42.8 12.1 29.0 13.0 27.0 7.4
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles 35.5 2.5 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 39.5 1.0 40.6 9.0
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.