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 7.0 41.5 17.5
Less than 50 miles 18.0 4.1 S S S S
50 to 99 miles 17.6 1.1 19.6 2.1 19.5 0.6
100 to 249 miles 8.6 0.9 17.4 1.3 14.9 1.2
250 to 499 miles 10.4 1.7 21.0 1.3 20.4 1.2
500 to 749 miles 8.9 0.6 25.4 2.5 28.9 5.7
750 to 999 miles 15.5 1.1 23.3 1.0 22.8 2.0
1,000 to 1,499 miles 10.4 1.2 27.0 5.0 27.6 7.8
1,500 to 1,999 miles 23.5 0.8 26.6 0.2 25.9 1.0
2,000 miles or more S S S S S S

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 8.4 42.7 19.2
Less than 50 miles 21.9 4.9 S S S S
50 to 99 miles 21.8 1.8 19.9 2.2 19.8 0.6
100 to 249 miles 7.1 0.9 17.9 1.3 16.2 1.3
250 to 499 miles 12.6 2.0 21.4 1.4 21.2 1.4
500 to 749 miles 12.2 0.9 21.7 1.8 26.7 4.5
750 to 999 miles 19.2 1.2 24.5 1.0 24.1 2.3
1,000 to 1,499 miles 12.5 1.3 27.3 5.0 27.8 7.5
1,500 to 1,999 miles 27.7 0.7 30.7 0.2 30.1 0.9
2,000 miles or more 41.7 S S S S

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 9.3 S S 15.1
Less than 50 miles 22.4 4.9 S S S S
50 to 99 miles 21.8 2.1 20.0 2.8 20.0 1.3
100 to 249 miles 7.2 1.0 17.5 2.2 15.7 1.6
250 to 499 miles 13.8 1.6 22.0 1.8 21.5 1.9
500 to 749 miles 11.1 0.9 15.9 1.0 15.9 2.2
750 to 999 miles 22.4 1.3 25.6 1.0 25.4 2.3
1,000 to 1,499 miles 15.2 1.3 20.9 1.0 20.4 3.1
1,500 to 1,999 miles 35.1 0.7 41.1 0.4 41.1 1.7
2,000 miles or more S S S S S S

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 23.1 23.7 25.3
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 47.5 4.4 S S S S
250 to 499 miles 35.4 3.6 32.7 3.3 32.7 1.7
500 to 749 miles 27.0 4.1 17.7 4.4 16.5 6.8
750 to 999 miles 49.5 6.2 49.8 5.5 49.2 5.8
1,000 to 1,499 miles 24.0 8.1 28.4 8.9 28.0 9.0
1,500 to 1,999 miles 31.1 2.3 43.1 2.4 43.9 4.5
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 27.5 29.1 28.5
Less than 50 miles S S 44.8 8.5 46.1 0.2
50 to 99 miles S S S S S S
100 to 249 miles 29.4 0.4 34.8 0.3 45.9
250 to 499 miles 46.4 6.8 S S S S
500 to 749 miles 36.2 2.7 37.0 9.7 38.4 11.0
750 to 999 miles 38.8 3.6 S S S S
1,000 to 1,499 miles 25.5 5.5 32.2 11.0 32.2 11.7
1,500 to 1,999 miles 38.1 0.8 39.2 0.1 38.2 0.2
2,000 miles or more 43.0 0.3 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 12.2 18.0 23.3
Less than 50 miles 22.1 2.7 32.0 3.7 29.2 0.2
50 to 99 miles 18.1 0.9 30.2 1.1 29.7 0.2
100 to 249 miles 17.9 1.9 35.5 3.2 S S
250 to 499 miles 7.9 1.1 24.2 2.7 35.4 3.0
500 to 749 miles 18.9 1.9 39.4 3.2 S S
750 to 999 miles 19.4 1.5 17.4 1.7 18.2 2.7
1,000 to 1,499 miles 15.4 1.3 41.2 5.9 41.0 7.2
1,500 to 1,999 miles 33.7 1.6 39.8 1.6 43.0 2.9
2,000 miles or more S S 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 12.4 19.9 14.4
Less than 50 miles 22.1 2.8 32.1 3.7 29.2 0.2
50 to 99 miles 18.1 0.9 30.2 1.4 29.7 0.3
100 to 249 miles 18.0 2.0 38.9 2.3 40.9 1.1
250 to 499 miles 8.0 1.2 24.0 0.9 22.4 0.7
500 to 749 miles 18.9 1.8 25.6 1.3 26.0 1.5
750 to 999 miles 19.4 1.5 17.4 1.4 18.2 1.7
1,000 to 1,499 miles 16.2 1.3 14.0 2.4 15.6 2.4
1,500 to 1,999 miles 33.9 1.6 10.2 1.3 10.3 2.6
2,000 miles or more 32.6 25.8 27.9 0.3

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 33.3 36.6
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 S S S S S S
750 to 999 miles
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

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 24.5 29.9 41.5
Less than 50 miles 32.4 5.6 34.7 10.5 44.9 3.4
50 to 99 miles 31.6 3.0 24.8 1.9 27.7 1.3
100 to 249 miles S S 43.6 3.4 47.2 4.7
250 to 499 miles 33.8 1.7 40.1 2.3 42.9 6.6
500 to 749 miles 25.7 3.2 49.7 14.8 49.8 18.7
750 to 999 miles S S S S S S
1,000 to 1,499 miles 42.1 6.5 S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more

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.