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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 28.4 – 9.9 – 6.9 –
Less than 50 miles 42.8 8.3 10.2 2.5 13.6 0.9
50 to 99 miles 20.8 1.6 35.5 1.3 28.9 0.5
100 to 249 miles 12.2 1.9 13.2 1.3 13.2 0.9
250 to 499 miles 20.8 0.7 14.8 0.3 14.7 0.4
500 to 749 miles 17.3 1.0 13.3 0.4 13.9 1.0
750 to 999 miles 16.5 0.8 24.3 0.6 26.8 2.7
1,000 to 1,499 miles 18.9 0.9 31.3 0.7 35.2 3.6
1,500 to 1,999 miles 10.7 1.6 18.8 0.3 18.8 3.0
2,000 miles or more 12.5 1.7 16.4 0.5 16.3 4.4

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 33.6 – 10.5 – 10.5 –
Less than 50 miles 45.4 8.3 9.5 2.4 13.8 1.2
50 to 99 miles 23.6 1.8 36.9 1.4 30.3 0.7
100 to 249 miles 13.5 2.3 20.2 1.3 19.9 1.5
250 to 499 miles 22.2 0.9 15.8 0.4 15.6 1.1
500 to 749 miles 20.2 1.1 14.4 0.4 14.7 1.1
750 to 999 miles 22.7 1.0 26.7 0.6 29.4 3.6
1,000 to 1,499 miles 23.9 0.8 25.4 0.5 26.4 2.5
1,500 to 1,999 miles 19.6 1.7 22.6 0.3 22.7 3.4
2,000 miles or more 10.6 1.1 15.1 0.2 16.1 2.5

Truck

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 – 11.9 – 11.5 –
Less than 50 miles 18.4 3.4 11.0 2.3 15.3 1.8
50 to 99 miles 23.6 1.5 36.9 1.4 30.3 1.0
100 to 249 miles 13.7 1.4 20.3 1.2 19.9 1.9
250 to 499 miles 22.6 0.8 16.3 0.4 15.7 1.2
500 to 749 miles 14.7 0.3 16.9 0.4 17.0 1.8
750 to 999 miles 28.8 0.7 29.8 0.5 29.4 2.6
1,000 to 1,499 miles 23.9 0.5 21.5 0.3 20.3 1.5
1,500 to 1,999 miles 22.3 1.3 27.9 0.2 28.2 3.0
2,000 miles or more 13.9 0.3 16.3 0.2 16.9 2.0

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 17.3 – 20.6 – 18.9 –
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 31.4 4.4 45.9 7.3 45.1 5.0
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 25.5 6.1 24.4 6.3 24.5 8.1
2,000 miles or more 43.8 5.8 45.0 4.4 45.7 6.3

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 S S S S 40.2 –
Less than 50 miles S S S S S S
50 to 99 miles – – – – – –
100 to 249 miles 38.4 0.8 S S S S
250 to 499 miles S S S S S S
500 to 749 miles 39.8 7.6 40.1 3.9 43.2 8.8
750 to 999 miles S S 36.0 1.1 44.0 1.1
1,000 to 1,499 miles 40.6 7.6 S S 49.1 11.5
1,500 to 1,999 miles 37.5 9.3 S S S S
2,000 miles or more 33.8 10.3 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 18.7 – 20.0 – 23.1 –
Less than 50 miles 29.1 5.1 41.7 3.5 31.2 –
50 to 99 miles 34.6 1.2 36.8 0.4 41.3 –
100 to 249 miles 23.6 1.9 11.4 1.2 11.2 0.2
250 to 499 miles 24.3 0.8 29.2 0.5 28.9 0.2
500 to 749 miles 29.8 1.0 40.1 2.0 45.9 1.3
750 to 999 miles 23.9 2.3 31.5 3.0 31.8 2.3
1,000 to 1,499 miles 19.8 1.0 S S S S
1,500 to 1,999 miles 27.2 2.2 S S S S
2,000 miles or more 25.1 3.3 36.6 5.9 36.0 8.1

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 19.0 – 20.4 – 33.3 –
Less than 50 miles 29.2 5.2 26.7 5.4 17.0 0.3
50 to 99 miles 34.6 1.3 36.8 2.1 41.3 0.4
100 to 249 miles 23.8 2.2 18.3 2.2 18.4 0.8
250 to 499 miles 24.3 0.8 29.2 1.5 28.9 0.9
500 to 749 miles 30.6 1.0 36.6 1.3 36.4 1.3
750 to 999 miles 24.2 2.5 44.1 1.4 44.5 2.0
1,000 to 1,499 miles 20.4 0.7 25.9 1.0 26.4 1.6
1,500 to 1,999 miles 29.9 2.4 35.4 1.8 37.6 3.5
2,000 miles or more 25.4 3.3 37.2 3.2 36.1 3.4

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 28.9 – 22.4 – 23.3 –
Less than 50 miles S S S S S S
50 to 99 miles – – – – – –
100 to 249 miles 45.8 0.5 49.0 0.8 47.9 –
250 to 499 miles – – – – – –
500 to 749 miles S S S S S S
750 to 999 miles 44.6 2.3 34.5 3.5 34.5 2.5
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 37.6 8.0 37.3 8.2 36.7 9.3

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 34.3 – 14.8 – 28.1 –
Less than 50 miles 38.9 10.8 34.8 13.4 34.9 8.1
50 to 99 miles S S S S S S
100 to 249 miles 45.2 10.6 41.6 13.6 39.4 12.8
250 to 499 miles S S S S S S
500 to 749 miles S S 45.6 0.6 46.2 3.9
750 to 999 miles S S 44.3 0.2 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.