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 14.2 10.5 15.2
Less than 50 miles 19.0 3.2 20.4 6.7 21.5 0.7
50 to 99 miles 16.9 1.5 30.0 11.0 29.0 8.2
100 to 249 miles 24.7 2.6 18.5 1.6 17.3 1.6
250 to 499 miles 27.4 3.0 46.9 10.0 43.8 10.4
500 to 749 miles 25.1 2.8 23.9 0.9 23.6 3.6
750 to 999 miles 11.7 0.6 28.5 0.3 27.9 1.4
1,000 to 1,499 miles 29.3 1.2 38.2 0.3 38.3 1.7
1,500 to 1,999 miles 32.3 2.0 43.5 0.2 43.4 1.2
2,000 miles or more 47.0 1.1 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 13.2 10.6 15.5
Less than 50 miles 24.0 3.3 20.8 6.8 21.7 0.8
50 to 99 miles 19.2 1.8 30.1 11.1 29.3 8.4
100 to 249 miles 26.7 3.3 16.0 1.4 14.5 1.6
250 to 499 miles 17.0 2.6 46.9 10.0 43.9 10.5
500 to 749 miles 25.0 3.1 23.9 0.9 23.6 3.7
750 to 999 miles 13.5 0.7 28.5 0.4 27.4 1.4
1,000 to 1,499 miles 34.7 1.3 43.4 0.3 43.7 1.5
1,500 to 1,999 miles 37.3 2.1 45.4 0.2 45.6 1.2
2,000 miles or more 25.9 0.6 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 16.5 16.1 18.2
Less than 50 miles 24.4 3.6 20.8 5.9 21.9 1.2
50 to 99 miles 30.0 2.1 34.3 5.8 38.9 4.5
100 to 249 miles 28.2 4.2 16.1 3.6 14.3 2.5
250 to 499 miles 21.7 1.4 22.1 1.4 21.0 3.1
500 to 749 miles 18.6 0.8 26.7 1.2 25.2 3.4
750 to 999 miles 15.5 0.8 42.0 0.3 39.0 1.4
1,000 to 1,499 miles 26.4 1.0 37.0 0.4 36.3 2.1
1,500 to 1,999 miles 37.4 2.3 45.4 0.3 45.6 1.7
2,000 miles or more 37.8 0.8 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 27.8 35.0 24.3
Less than 50 miles S S S S S S
50 to 99 miles 34.9 3.9 40.1 19.7 39.0 11.9
100 to 249 miles S S 49.2 3.1 48.8 1.7
250 to 499 miles 39.0 7.3 33.6 7.7 39.5 5.2
500 to 749 miles 31.3 8.4 28.4 7.5 27.9 6.2
750 to 999 miles 48.1 0.6 S S S S
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

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
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 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

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 35.7 49.1 37.2
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 38.3 1.8 S S S S
750 to 999 miles 35.3 3.4 S S S S
1,000 to 1,499 miles 34.5 8.3 S S S S
1,500 to 1,999 miles 39.0 2.8 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 39.0 S S S S
Less than 50 miles S S S S S S
50 to 99 miles 44.3 0.7 46.6 2.6 45.0 0.2
100 to 249 miles S S S S S S
250 to 499 miles S S S S S S
500 to 749 miles 38.3 2.1 S S S S
750 to 999 miles 35.3 3.5 S S S S
1,000 to 1,499 miles 35.8 8.5 33.3 9.3 32.1 9.7
1,500 to 1,999 miles 39.0 4.8 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 46.0
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
500 to 749 miles
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 32.9 36.2 S S
Less than 50 miles 37.3 16.0 39.4 16.9 39.4 14.0
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 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.