Table B-3. Estimated Measures of Reliability for Shipment Characteristics by Mode of Transportation and Distance Shipped for CBSA of Origin: 2002

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 7.6 9.8 11.8
Less than 50 miles 11.9 3.1 12.4 3.4 12.4 1.7
50 to 99 miles 14.2 0.4 14.5 1.2 14.1 0.8
100 to 249 miles 23.9 0.6 42.3 2.3 36.5 1.7
250 to 499 miles 21.1 2.0 30.3 1.4 32.9 3.1
500 to 749 miles 10.0 0.6 29.4 0.6 34.5 3.6
750 to 999 miles 18.2 0.3 27.5 0.1 28.1 1.1
1,000 to 1,499 miles 15.6 0.6 30.0 0.2 31.5 1.8
1,500 to 1,999 miles 23.0 2.1 20.5 0.4 20.1 2.2
2,000 miles or more 9.7 2.0 23.1 0.8 22.0 5.5

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 10.0 10.1 13.5
Less than 50 miles 13.0 3.9 12.9 3.5 11.4 2.1
50 to 99 miles 14.5 0.5 11.4 1.2 11.9 0.7
100 to 249 miles 24.6 0.6 43.5 2.3 37.4 1.8
250 to 499 miles 21.3 1.4 31.9 1.4 34.3 3.4
500 to 749 miles 15.6 0.7 32.1 0.6 37.5 3.7
750 to 999 miles 18.3 0.3 29.4 0.1 30.0 1.2
1,000 to 1,499 miles 23.6 0.7 32.6 0.2 34.2 1.8
1,500 to 1,999 miles 19.2 0.9 21.3 0.4 21.2 1.9
2,000 miles or more 18.5 2.5 25.8 0.9 24.6 6.1

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 10.0 11.5 13.4
Less than 50 miles 15.2 4.0 16.0 4.3 13.8 2.4
50 to 99 miles 14.8 0.7 11.4 1.4 11.8 0.9
100 to 249 miles 17.3 0.6 20.6 0.7 20.2 1.6
250 to 499 miles 21.3 1.2 17.1 1.3 16.6 1.5
500 to 749 miles 20.8 0.7 17.9 0.7 17.7 1.6
750 to 999 miles 21.7 0.4 29.3 0.2 30.0 1.6
1,000 to 1,499 miles 23.4 0.8 15.7 0.1 15.8 1.1
1,500 to 1,999 miles 19.4 0.7 25.5 0.4 25.5 2.0
2,000 miles or more 16.4 2.3 27.2 1.2 26.0 6.8

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 25.5 23.5 21.2
Less than 50 miles S S 44.1 4.2 44.0 0.1
50 to 99 miles S S 49.3 0.9 50.0
100 to 249 miles S S S S S S
250 to 499 miles 37.3 10.1 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 38.1 2.6 S S S S
1,500 to 1,999 miles 27.7 9.1 16.9 5.2 16.7 7.4
2,000 miles or more 45.0 2.3 35.4 1.0 38.0 2.5

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 22.0 25.3 41.3
Less than 50 miles 21.1 8.9 22.7 5.4 24.7 13.7
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles 30.7 4.5 S S S S
500 to 749 miles 30.5 3.8 S S S S
750 to 999 miles 42.7 0.3 S S S S
1,000 to 1,499 miles S S 47.2 46.1 1.4
1,500 to 1,999 miles 37.9 3.9 S S S S
2,000 miles or more 45.5 4.4 34.2 0.2 32.4 6.6

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 20.3 21.9 18.5
Less than 50 miles 17.8 3.1 20.9 2.3 18.7
50 to 99 miles 23.6 0.6 33.4 1.0 31.6
100 to 249 miles 32.6 1.4 S S S S
250 to 499 miles 43.2 4.0 40.0 3.2 41.9 1.5
500 to 749 miles 33.9 1.0 37.7 2.7 36.7 1.9
750 to 999 miles 30.6 0.4 30.3 0.3 26.8 0.2
1,000 to 1,499 miles 21.2 1.6 24.5 2.0 23.8 2.0
1,500 to 1,999 miles 47.0 4.9 14.4 1.8 13.4 2.2
2,000 miles or more 21.5 3.3 20.2 4.1 21.1 3.9

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 20.6 23.6 24.7
Less than 50 miles 17.8 3.2 20.9 3.0 18.7
50 to 99 miles 23.6 0.6 42.0 1.6 40.1 0.1
100 to 249 miles 32.6 1.4 S S S S
250 to 499 miles 43.5 4.1 24.5 1.6 24.8 0.5
500 to 749 miles 34.2 1.0 32.5 2.8 29.1 1.6
750 to 999 miles 30.7 0.4 35.4 0.6 32.5 0.4
1,000 to 1,499 miles 21.7 1.6 30.9 1.6 29.9 1.9
1,500 to 1,999 miles 47.3 4.9 23.6 1.5 23.2 2.1
2,000 miles or more 22.0 3.4 27.5 2.4 28.1 2.8

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 15.3 24.5 17.1
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 38.2 8.2 S S S S
500 to 749 miles 39.3 2.1 48.2 5.7 47.4 4.2
750 to 999 miles S S S S S S
1,000 to 1,499 miles 45.8 3.2 46.6 2.7 46.5 2.2
1,500 to 1,999 miles 34.5 3.9 29.8 4.5 29.9 4.3
2,000 miles or more 19.1 8.9 19.6 11.5 19.9 7.5

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 18.2 S S 32.8
Less than 50 miles 28.2 6.7 S S S S
50 to 99 miles 44.4 4.1 S S S S
100 to 249 miles 44.8 0.9 S S S S
250 to 499 miles 31.3 3.7 31.3 6.2 29.0 4.4
500 to 749 miles 44.6 3.5 S S S S
750 to 999 miles S S 39.9 0.5 39.6 0.9
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 42.9 2.0 S S S S
2,000 miles or more 29.6 2.5 36.9 3.4 37.6 9.5

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.