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 13.7 21.0 16.8
Less than 50 miles 26.6 6.9 34.4 7.9 19.4 0.8
50 to 99 miles 24.9 1.2 27.8 0.6 28.9 0.2
100 to 249 miles 17.5 2.8 19.2 3.3 18.1 2.3
250 to 499 miles 24.6 2.6 24.6 3.7 31.4 4.5
500 to 749 miles 23.4 1.2 33.7 1.4 34.5 3.5
750 to 999 miles 37.3 2.7 37.8 1.8 44.6 6.7
1,000 to 1,499 miles 13.6 0.3 19.9 0.4 19.8 1.9
1,500 to 1,999 miles 27.8 0.6 27.2 0.4 27.7 4.3
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 14.2 22.4 16.2
Less than 50 miles 27.6 6.8 35.8 8.1 19.8 0.8
50 to 99 miles 26.4 1.3 28.5 0.7 29.6 0.2
100 to 249 miles 17.5 3.0 19.2 3.7 18.1 2.7
250 to 499 miles 19.3 2.7 19.5 3.7 21.6 3.7
500 to 749 miles 24.5 1.2 33.7 1.5 34.6 3.5
750 to 999 miles 40.3 1.0 32.0 0.7 32.2 4.4
1,000 to 1,499 miles 11.9 0.3 20.0 0.4 19.8 1.9
1,500 to 1,999 miles 27.9 0.5 27.4 0.4 27.9 4.3
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 14.3 22.1 14.4
Less than 50 miles 12.4 3.6 33.5 5.4 21.7 1.1
50 to 99 miles 26.6 1.6 28.5 1.0 29.6 0.4
100 to 249 miles 16.3 2.0 18.7 2.7 16.8 3.7
250 to 499 miles 17.7 1.4 14.5 2.3 15.4 2.7
500 to 749 miles 28.2 1.1 32.3 0.9 32.4 2.3
750 to 999 miles S S 38.9 0.6 36.6 3.3
1,000 to 1,499 miles 19.8 0.3 26.5 0.2 28.0 1.4
1,500 to 1,999 miles 34.9 0.3 S S S S
2,000 miles or more

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 21.9 23.1 19.7
Less than 50 miles S S 44.7 5.1 45.7 0.7
50 to 99 miles
100 to 249 miles 38.9 5.6 41.9 5.3 38.6 2.5
250 to 499 miles 30.5 8.0 31.7 7.4 33.3 5.5
500 to 749 miles 40.3 6.3 42.6 7.2 42.3 6.7
750 to 999 miles 30.2 4.2 34.2 4.1 34.9 5.8
1,000 to 1,499 miles 36.1 1.3 31.4 1.1 30.0 3.5
1,500 to 1,999 miles 46.0 10.0 36.2 9.9 36.7 9.5
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 S S S S 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 S S S S
500 to 749 miles 46.9 8.2 S S S S
750 to 999 miles 43.3 2.5 49.2 2.9 47.9 3.3
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 38.7 10.7 46.9 10.6 46.3 10.6
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 41.8 S S 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 33.9 2.5 S S S S
250 to 499 miles S S S S S S
500 to 749 miles 33.8 5.0 S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles 44.5 3.0 34.8 2.6 33.9 5.6
1,500 to 1,999 miles 36.6 8.2 S S S S
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 33.4 S S S S
Less than 50 miles S S S S S S
50 to 99 miles 43.5 5.0 S S S S
100 to 249 miles 36.9 2.0 S S S S
250 to 499 miles 35.7 4.7 S S S S
500 to 749 miles 33.8 5.6 S S S S
750 to 999 miles 47.1 2.8 S S S S
1,000 to 1,499 miles 44.5 2.9 34.8 2.9 33.9 5.7
1,500 to 1,999 miles 39.9 1.4 S S S S
2,000 miles or more S S S S S S

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 S S S S
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
750 to 999 miles S S S S S S
1,000 to 1,499 miles
1,500 to 1,999 miles S S S S S S
2,000 miles or more

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 33.3 31.5
Less than 50 miles 31.6 10.3 33.5 10.5 45.9 11.3
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 S S S S S S
1,000 to 1,499 miles
1,500 to 1,999 miles
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.