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 8.0 11.9 6.7
Less than 50 miles 19.6 2.9 21.7 4.6 24.9 0.9
50 to 99 miles 13.0 1.2 23.9 2.2 23.6 0.7
100 to 249 miles 12.4 1.2 17.8 2.8 22.0 1.7
250 to 499 miles 7.5 1.3 15.6 2.0 14.1 2.4
500 to 749 miles 6.9 1.1 14.4 0.9 16.5 3.2
750 to 999 miles 9.8 0.9 13.6 1.9 13.7 4.2
1,000 to 1,499 miles 18.1 0.4 19.7 0.1 21.0 0.5
1,500 to 1,999 miles 14.4 0.5 20.1 0.1 20.1 0.9
2,000 miles or more 37.6 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 7.9 12.7 9.7
Less than 50 miles 18.6 2.8 22.1 4.6 25.2 1.0
50 to 99 miles 13.2 1.3 24.1 2.4 24.0 1.0
100 to 249 miles 12.8 1.4 18.3 2.8 22.5 1.7
250 to 499 miles 7.8 1.6 15.8 2.2 14.2 3.7
500 to 749 miles 8.1 1.1 12.6 1.0 14.5 3.0
750 to 999 miles 12.1 0.9 20.4 1.4 20.9 3.9
1,000 to 1,499 miles 19.9 0.5 20.1 0.1 20.9 0.5
1,500 to 1,999 miles 18.7 0.5 23.4 0.2 23.8 1.2
2,000 miles or more S S 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 8.6 15.8 10.1
Less than 50 miles 18.2 3.1 23.7 5.2 20.8 2.0
50 to 99 miles 13.4 1.3 29.1 3.5 30.0 2.4
100 to 249 miles 15.7 1.6 27.6 3.4 21.9 2.5
250 to 499 miles 8.7 1.6 13.1 1.6 12.1 2.8
500 to 749 miles 10.3 1.0 19.5 0.6 20.6 2.2
750 to 999 miles 13.1 0.8 14.0 0.3 14.0 1.0
1,000 to 1,499 miles 18.3 0.5 19.2 0.1 20.1 0.9
1,500 to 1,999 miles 19.5 0.6 22.1 0.2 22.4 2.1
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 14.7 23.3 13.6
Less than 50 miles S S S S S S
50 to 99 miles 35.1 0.8 38.1 3.5 36.8 1.2
100 to 249 miles 25.0 2.1 27.6 4.6 27.9 2.9
250 to 499 miles 18.7 4.8 39.4 6.1 32.1 5.8
500 to 749 miles 17.1 4.2 21.8 3.3 21.5 4.4
750 to 999 miles 37.4 4.9 29.2 1.0 29.7 1.9
1,000 to 1,499 miles 48.9 2.0 29.1 0.8 29.6 2.3
1,500 to 1,999 miles 39.3 2.2 39.0 0.4 38.1 1.9
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 25.4 26.5 21.3
Less than 50 miles 46.5 4.1 45.5 2.7 S S
50 to 99 miles S S S S S S
100 to 249 miles 37.2 7.9 44.0 9.5 S S
250 to 499 miles 44.2 3.0 S S S S
500 to 749 miles 33.4 3.3 29.1 4.7 29.3 6.2
750 to 999 miles 20.0 10.4 24.9 11.4 24.6 8.0
1,000 to 1,499 miles 37.3 1.8 S S S S
1,500 to 1,999 miles 40.6 0.3 45.3 45.1
2,000 miles or more S S 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 11.8 26.8 29.2
Less than 50 miles 32.2 1.2 49.5 1.1 28.5
50 to 99 miles 18.9 0.8 S S S S
100 to 249 miles 17.2 1.6 S S S S
250 to 499 miles 15.2 1.6 30.2 3.0 30.5 1.6
500 to 749 miles 12.4 2.3 S S S S
750 to 999 miles 18.1 3.2 44.8 14.9 44.9 15.5
1,000 to 1,499 miles 32.8 0.9 S S S S
1,500 to 1,999 miles 13.0 1.7 27.1 4.4 27.3 8.3
2,000 miles or more 36.8 0.1 44.6 46.1 0.2

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 14.6 22.8 23.2
Less than 50 miles 32.2 1.3 49.5 1.2 28.5
50 to 99 miles 18.5 0.9 22.1 1.1 21.9 0.2
100 to 249 miles 17.0 1.4 26.7 1.6 27.3 0.5
250 to 499 miles 15.2 2.6 23.0 2.7 23.9 2.1
500 to 749 miles 15.0 1.2 26.1 2.5 25.6 2.7
750 to 999 miles 21.0 1.9 24.1 1.3 23.6 1.8
1,000 to 1,499 miles 34.3 1.0 S S S S
1,500 to 1,999 miles 15.9 1.7 20.2 1.8 19.6 3.9
2,000 miles or more 40.1 0.1 40.8 0.1 41.5 0.4

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 20.7 27.7 29.8
Less than 50 miles
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 35.2 10.9 45.2 16.2 45.2 16.9
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 15.5 8.0 29.7 9.7 29.7 12.1
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 29.5 39.2 15.1
Less than 50 miles 39.2 16.1 S S 49.6 6.2
50 to 99 miles S S 44.0 5.0 43.6 2.6
100 to 249 miles 29.4 6.4 19.4 6.9 19.9 4.3
250 to 499 miles 40.3 7.1 32.2 4.4 32.1 5.4
500 to 749 miles S S 27.2 1.4 27.4 5.2
750 to 999 miles 46.2 1.2 36.0 1.3 34.8 4.0
1,000 to 1,499 miles 41.6 1.3 S S 46.2 4.9
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.