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 7.3 17.0 15.4
Less than 50 miles 10.9 2.6 31.5 6.6 28.1 0.9
50 to 99 miles 17.3 1.1 24.9 3.6 25.8 1.6
100 to 249 miles 12.2 0.7 15.4 1.9 15.0 2.2
250 to 499 miles 11.7 1.8 18.5 2.0 17.9 3.2
500 to 749 miles 18.3 1.9 36.8 2.8 40.0 4.9
750 to 999 miles 17.6 1.3 33.0 1.1 35.6 4.6
1,000 to 1,499 miles 15.8 2.5 40.5 0.6 42.7 5.8
1,500 to 1,999 miles 33.0 0.2 S S S S
2,000 miles or more 37.0 49.6 43.5

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 7.3 16.5 15.5
Less than 50 miles 11.5 3.0 32.1 6.9 28.8 1.0
50 to 99 miles 17.4 1.2 25.0 3.6 25.9 1.6
100 to 249 miles 15.2 0.9 17.4 2.2 16.8 2.5
250 to 499 miles 13.0 2.1 18.5 2.0 18.1 3.2
500 to 749 miles 12.5 1.4 38.2 2.8 41.1 5.1
750 to 999 miles 19.3 1.6 33.3 1.1 35.9 4.6
1,000 to 1,499 miles 17.6 2.7 41.2 0.7 43.5 6.4
1,500 to 1,999 miles 33.5 0.2 S S S S
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 6.8 19.9 9.3
Less than 50 miles 12.5 3.5 33.9 6.7 30.0 2.0
50 to 99 miles 19.0 1.5 29.6 4.1 30.8 3.5
100 to 249 miles 14.2 1.1 16.8 3.1 16.3 1.8
250 to 499 miles 14.0 2.2 19.1 1.8 19.4 2.9
500 to 749 miles 12.6 1.1 15.6 0.5 15.4 1.3
750 to 999 miles 24.4 2.1 38.0 0.9 41.4 3.3
1,000 to 1,499 miles 16.7 2.5 15.1 0.7 14.6 4.0
1,500 to 1,999 miles 35.7 0.2 40.4 39.9 0.3
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 33.4 22.8 27.7
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 35.2 7.4 35.2 7.6 34.6 3.8
250 to 499 miles 29.5 4.3 34.5 4.7 31.8 4.6
500 to 749 miles 38.1 4.5 S S S S
750 to 999 miles 37.2 6.1 S S 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

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 26.1 S S S S
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 40.2 2.4 42.5 4.1 42.7 4.9
500 to 749 miles 47.8 7.5 39.0 10.8 38.0 8.3
750 to 999 miles 34.6 7.4 30.2 6.9 30.1 7.6
1,000 to 1,499 miles 27.1 3.9 34.0 8.0 35.7 10.7
1,500 to 1,999 miles S S S S S S
2,000 miles or more 42.1 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 16.1 S S S S
Less than 50 miles 48.4 3.8 S S S S
50 to 99 miles 30.2 1.0 36.5 1.8 39.0 0.3
100 to 249 miles 40.3 4.0 S S S S
250 to 499 miles 33.9 3.8 S S S S
500 to 749 miles 14.3 3.2 36.7 4.4 39.8 4.1
750 to 999 miles 21.1 2.3 18.0 1.8 18.5 3.5
1,000 to 1,499 miles 20.9 5.9 S S S S
1,500 to 1,999 miles 44.2 0.1 39.0 0.2 38.8 0.6
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 15.7 24.4 18.5
Less than 50 miles 48.4 5.1 S S S S
50 to 99 miles 30.2 1.0 36.5 1.8 39.0 0.4
100 to 249 miles 28.6 3.3 33.1 3.4 32.3 1.8
250 to 499 miles 33.2 3.6 21.8 3.2 22.1 1.5
500 to 749 miles 16.0 3.1 19.2 2.9 19.5 1.5
750 to 999 miles 21.1 2.2 18.0 1.4 18.5 1.8
1,000 to 1,499 miles 19.5 5.1 24.1 4.2 25.0 4.3
1,500 to 1,999 miles 44.2 0.1 39.0 0.2 38.8 0.6
2,000 miles or more S S S S 49.7 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 S S S S
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
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 40.3 28.7 36.7
Less than 50 miles 27.5 12.7 45.3 10.7 S S
50 to 99 miles S S 47.1 2.7 46.6 1.4
100 to 249 miles 46.5 4.4 38.5 2.7 37.5 4.0
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 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.