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 10.4 21.7 13.1
Less than 50 miles 17.2 3.0 26.9 3.9 37.5 2.5
50 to 99 miles 12.3 0.5 28.7 0.5 33.1 0.6
100 to 249 miles 13.9 1.2 17.3 2.1 17.6 2.8
250 to 499 miles 12.0 1.2 23.5 1.6 24.2 3.0
500 to 749 miles 9.6 1.3 19.5 1.2 18.1 2.1
750 to 999 miles 12.6 0.7 13.7 0.4 13.6 0.9
1,000 to 1,499 miles 12.6 0.2 35.5 0.2 35.1 1.4
1,500 to 1,999 miles 43.3 1.1 14.3 0.2 13.3 1.6
2,000 miles or more 18.4 0.4 21.0 0.1 21.3 1.4

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 11.3 21.0 13.5
Less than 50 miles 16.8 3.1 25.7 3.8 35.2 2.3
50 to 99 miles 11.9 0.4 29.3 0.5 33.7 0.6
100 to 249 miles 15.0 1.3 17.5 2.1 17.7 2.9
250 to 499 miles 13.1 1.5 23.9 1.6 24.6 3.0
500 to 749 miles 10.1 1.4 20.0 1.2 18.5 2.2
750 to 999 miles 14.1 0.6 14.6 0.3 14.4 0.9
1,000 to 1,499 miles 18.6 0.2 38.3 0.2 37.9 1.5
1,500 to 1,999 miles S S 14.4 0.2 13.2 1.6
2,000 miles or more 23.7 0.4 22.3 0.1 22.8 1.4

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 12.5 21.7 15.4
Less than 50 miles 16.7 3.3 25.7 3.7 35.4 2.4
50 to 99 miles 11.9 0.5 29.3 0.5 33.8 0.6
100 to 249 miles 15.5 1.5 18.3 1.8 18.8 2.9
250 to 499 miles 14.7 1.8 25.1 1.4 25.3 2.0
500 to 749 miles 14.4 1.1 21.7 1.1 20.2 1.9
750 to 999 miles 13.6 0.5 16.5 0.4 16.6 1.0
1,000 to 1,499 miles 18.8 0.2 38.2 0.2 38.4 1.7
1,500 to 1,999 miles 21.5 0.2 18.4 0.2 17.6 1.8
2,000 miles or more 20.4 0.2 20.0 19.8 0.5

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 32.1 33.6 31.7
Less than 50 miles S S 42.2 5.1 48.3 0.3
50 to 99 miles S S S S 48.9
100 to 249 miles 45.6 7.3 49.1 6.5 47.4 4.1
250 to 499 miles 35.9 5.8 S S S S
500 to 749 miles 37.8 11.7 28.0 5.8 28.4 6.7
750 to 999 miles S S 37.3 1.9 37.1 4.9
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 46.8 3.5 46.5 7.3

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 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 48.1 8.0 47.3 8.0
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 16.9 13.6 15.5
Less than 50 miles 34.7 1.9 33.0 1.7 35.3
50 to 99 miles 41.2 2.0 S S S S
100 to 249 miles 17.7 1.1 17.5 2.5 16.7 1.1
250 to 499 miles 15.5 2.0 16.5 2.4 16.8 2.1
500 to 749 miles 18.3 1.5 15.0 1.9 14.6 3.4
750 to 999 miles 21.4 1.0 17.4 2.0 17.6 1.9
1,000 to 1,499 miles 25.6 0.5 21.6 0.6 22.9 0.9
1,500 to 1,999 miles 15.0 0.6 26.3 2.0 28.0 5.7
2,000 miles or more 20.8 0.5 44.2 1.9 44.9 6.2

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 17.2 14.2 13.8
Less than 50 miles 34.8 1.9 36.1 1.8 35.6 0.1
50 to 99 miles 41.2 2.1 S S S S
100 to 249 miles 17.7 1.1 17.5 2.7 16.7 1.3
250 to 499 miles 15.6 2.0 17.8 2.1 17.5 1.8
500 to 749 miles 18.5 1.5 15.8 1.7 15.6 2.2
750 to 999 miles 21.4 1.0 17.4 2.1 17.6 1.9
1,000 to 1,499 miles 26.0 0.5 22.6 0.7 24.2 1.2
1,500 to 1,999 miles 17.8 0.6 18.5 0.8 18.9 2.0
2,000 miles or more 23.3 0.4 28.2 0.4 28.6 1.2

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 40.8 28.2 29.3
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles
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 50.0 10.9 40.9 11.4 41.2 11.9
2,000 miles or more 37.8 11.1 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 29.4 S S 34.9
Less than 50 miles 38.6 8.5 S S S S
50 to 99 miles S S S S S S
100 to 249 miles 40.0 3.7 21.2 8.9 18.3 4.1
250 to 499 miles S S 42.6 3.2 43.2 6.6
500 to 749 miles 48.0 5.1 32.2 3.3 32.0 5.3
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 47.5 2.4 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.