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 5.9 20.5 19.3
Less than 50 miles 12.3 2.5 34.1 7.3 49.3 3.6
50 to 99 miles 9.7 0.8 18.0 1.3 20.7 1.0
100 to 249 miles 4.8 1.3 8.8 3.4 9.5 2.8
250 to 499 miles 10.5 2.2 14.5 2.0 14.5 2.9
500 to 749 miles 19.4 1.5 22.1 1.6 23.7 2.9
750 to 999 miles 27.5 1.8 18.3 0.5 18.0 1.7
1,000 to 1,499 miles 43.0 2.1 16.0 0.3 16.6 1.2
1,500 to 1,999 miles 27.4 1.6 S S S S
2,000 miles or more 44.5 44.0 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 6.3 21.1 18.3
Less than 50 miles 11.6 2.3 34.4 7.2 49.7 3.6
50 to 99 miles 9.7 0.9 18.2 1.4 20.9 1.1
100 to 249 miles 5.6 1.6 9.0 3.5 9.8 3.1
250 to 499 miles 13.7 2.5 14.0 1.9 13.9 3.3
500 to 749 miles 22.9 1.6 20.2 1.5 21.7 2.9
750 to 999 miles 34.6 1.6 21.8 0.5 21.0 1.6
1,000 to 1,499 miles S S 20.3 0.2 21.4 1.2
1,500 to 1,999 miles 33.6 1.5 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 5.8 22.6 17.8
Less than 50 miles 11.6 2.4 34.5 7.3 S S
50 to 99 miles 12.7 1.2 15.4 0.9 12.9 0.7
100 to 249 miles 6.1 1.7 8.7 3.7 9.6 3.0
250 to 499 miles 12.8 2.4 13.3 1.8 13.6 2.8
500 to 749 miles 24.2 1.7 17.6 1.1 18.0 2.4
750 to 999 miles 35.4 1.7 25.7 0.5 25.2 1.8
1,000 to 1,499 miles S S 20.3 0.2 21.3 1.7
1,500 to 1,999 miles 39.2 1.5 S S S S
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 26.3 23.2 29.8
Less than 50 miles S S S S S S
50 to 99 miles 40.1 6.4 S S S S
100 to 249 miles 31.3 10.1 23.3 8.6 24.0 9.4
250 to 499 miles S S 47.0 5.4 45.9 7.0
500 to 749 miles 42.6 5.5 43.9 9.5 43.2 11.9
750 to 999 miles 30.7 10.4 31.9 10.8 32.4 9.4
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 46.8 S S 49.3
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 46.1 8.4
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 45.8 1.0 36.2 0.7 41.6 1.3
1,500 to 1,999 miles 41.8 8.1 33.5 9.2 33.3 11.3
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 15.7 40.8 S S
Less than 50 miles 46.1 1.0 40.9 1.6 45.2 0.1
50 to 99 miles 29.5 1.2 49.9 2.6 46.1 0.5
100 to 249 miles 17.6 2.6 24.3 4.7 20.3 2.1
250 to 499 miles 23.1 2.2 14.6 3.6 15.9 2.6
500 to 749 miles 20.4 3.4 S S S S
750 to 999 miles S S 27.6 2.4 29.3 4.2
1,000 to 1,499 miles 45.0 2.6 S S S S
1,500 to 1,999 miles 28.3 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 17.0 17.6 21.7
Less than 50 miles 46.1 1.1 40.9 2.1 45.2 0.1
50 to 99 miles 29.5 1.2 49.9 2.6 46.1 0.5
100 to 249 miles 18.2 3.0 28.7 3.9 24.3 1.9
250 to 499 miles 23.1 2.3 14.6 2.2 15.9 1.7
500 to 749 miles 21.2 3.3 20.6 2.3 20.5 1.8
750 to 999 miles S S 23.6 1.1 22.9 2.3
1,000 to 1,499 miles 30.3 0.8 S S S S
1,500 to 1,999 miles 29.2 2.2 20.9 1.9 20.9 3.7
2,000 miles or more 39.5 41.1 36.0

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
100 to 249 miles S S S S S S
250 to 499 miles
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

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 29.1 17.5 34.7
Less than 50 miles S S 29.9 12.2 34.2 6.1
50 to 99 miles 45.2 1.1 47.1 1.3 46.3 3.0
100 to 249 miles 39.9 4.8 41.7 5.4 41.2 8.2
250 to 499 miles 40.6 5.1 S S S S
500 to 749 miles S S 49.1 4.7 49.7 9.5
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

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.