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 8.6 10.4 19.7
Less than 50 miles 8.9 1.9 14.2 5.2 15.6 1.1
50 to 99 miles 21.7 2.3 18.7 2.7 18.8 0.8
100 to 249 miles 15.2 1.3 28.5 4.2 25.6 3.7
250 to 499 miles 13.9 1.7 17.6 1.3 21.7 3.4
500 to 749 miles 15.6 1.3 15.3 1.2 14.9 2.8
750 to 999 miles 16.5 0.7 41.2 1.1 43.8 3.1
1,000 to 1,499 miles 27.4 0.9 S S S S
1,500 to 1,999 miles 18.1 0.8 39.8 0.8 44.4 3.5
2,000 miles or more 23.1 0.3 45.6 0.3 45.0 1.8

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 9.7 10.5 19.9
Less than 50 miles 9.7 2.1 14.1 5.0 16.0 1.2
50 to 99 miles 24.1 2.5 18.9 2.7 19.0 0.8
100 to 249 miles 16.8 1.4 28.6 4.3 25.7 3.8
250 to 499 miles 15.3 1.9 17.9 1.4 22.0 3.4
500 to 749 miles 16.7 1.4 15.5 1.3 15.2 2.9
750 to 999 miles 18.2 0.7 41.4 1.1 44.1 3.1
1,000 to 1,499 miles 28.7 0.9 S S S S
1,500 to 1,999 miles 20.1 0.9 40.7 0.8 45.4 3.6
2,000 miles or more 21.8 0.2 46.4 0.3 46.0 1.8

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 10.0 9.4 12.3
Less than 50 miles 9.6 2.5 15.3 4.9 20.9 1.6
50 to 99 miles 24.5 2.6 19.3 2.6 20.1 0.9
100 to 249 miles 16.9 1.7 18.6 2.1 18.6 2.8
250 to 499 miles 18.8 1.9 18.4 1.5 17.3 1.8
500 to 749 miles 18.6 1.5 19.6 1.3 18.8 2.3
750 to 999 miles 10.5 0.6 21.6 0.7 21.4 3.2
1,000 to 1,499 miles 24.6 0.9 24.1 0.1 28.5 0.7
1,500 to 1,999 miles 17.5 0.6 25.2 0.3 25.4 1.9
2,000 miles or more 28.3 0.2 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 26.6 30.6 32.7
Less than 50 miles 23.1 0.7 37.9 4.0 38.5 1.0
50 to 99 miles 19.7 1.7 22.5 2.8 20.8 0.4
100 to 249 miles 29.2 3.0 S S 42.9 5.9
250 to 499 miles 29.5 4.0 25.8 2.3 22.9 2.9
500 to 749 miles 15.9 5.8 16.9 3.1 18.0 5.7
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 40.4 3.0 S S S S
2,000 miles or more S S 38.5 40.1 0.5

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 33.5 S S S S
Less than 50 miles S S 45.1 5.8 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 44.7 7.6 S S S S
500 to 749 miles 36.5 5.2 S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles 39.2 1.2 35.2 0.6 34.1 1.6
1,500 to 1,999 miles S S S S S S
2,000 miles or more 36.0 4.6 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 11.3 15.5 11.7
Less than 50 miles 34.2 4.7 32.3 2.4 42.8 0.2
50 to 99 miles 34.2 3.9 39.5 2.8 37.2 0.4
100 to 249 miles 31.4 3.0 50.0 4.3 S S
250 to 499 miles 18.9 4.0 22.3 4.1 26.7 3.8
500 to 749 miles 26.2 4.5 18.3 3.9 19.8 3.6
750 to 999 miles 26.9 2.0 21.6 1.3 21.0 1.8
1,000 to 1,499 miles 42.0 1.4 23.9 0.4 23.3 0.8
1,500 to 1,999 miles 12.8 0.4 20.9 4.7 20.9 6.5
2,000 miles or more 49.6 1.9 28.9 2.0 29.9 4.4

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 11.8 25.5 23.0
Less than 50 miles 34.2 5.2 32.3 2.6 42.8 0.3
50 to 99 miles 34.3 4.0 39.9 3.5 37.5 0.8
100 to 249 miles 31.0 2.9 S S S S
250 to 499 miles 19.4 4.1 20.8 2.1 17.7 2.1
500 to 749 miles 27.2 4.6 20.5 3.3 19.9 3.0
750 to 999 miles 27.8 2.1 23.5 2.4 23.9 2.5
1,000 to 1,499 miles 42.0 1.5 23.9 0.6 23.3 1.8
1,500 to 1,999 miles 14.1 0.5 S S S S
2,000 miles or more S S 41.4 1.1 37.8 3.7

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 20.6 20.6 21.5
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 S S S S
750 to 999 miles 49.6 2.7 42.2 6.1 41.2 3.3
1,000 to 1,499 miles
1,500 to 1,999 miles 28.5 11.2 32.4 10.8 31.9 10.6
2,000 miles or more S S 39.1 4.8 38.6 7.5

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 26.3 S S 23.1
Less than 50 miles 35.6 7.8 S S 46.9 5.2
50 to 99 miles 37.5 4.3 40.3 2.7 39.2 1.2
100 to 249 miles 37.6 4.5 32.9 5.2 32.5 4.8
250 to 499 miles 26.7 5.5 35.5 9.3 36.0 9.2
500 to 749 miles 32.8 3.0 48.5 1.8 48.8 6.1
750 to 999 miles 38.5 0.7 47.7 0.7 47.6 2.5
1,000 to 1,499 miles 47.1 0.3 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.