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 22.8 14.5 16.5
Less than 50 miles 34.3 3.7 18.2 5.8 21.6 3.6
50 to 99 miles 25.3 3.0 41.8 3.3 43.0 3.0
100 to 249 miles 22.5 2.9 37.1 2.8 33.9 3.3
250 to 499 miles 32.1 2.4 19.6 1.2 20.6 3.4
500 to 749 miles 23.2 1.3 36.9 0.4 37.2 2.2
750 to 999 miles 34.4 1.5 42.7 0.2 42.2 1.6
1,000 to 1,499 miles 20.6 0.4 33.0 0.1 32.3 1.2
1,500 to 1,999 miles 35.3 0.6 S S S S
2,000 miles or more 22.3 1.0 37.7 0.1 38.1 2.6

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 24.7 14.6 17.0
Less than 50 miles 35.2 2.5 18.2 5.8 21.9 3.5
50 to 99 miles 26.3 3.2 41.8 3.3 43.1 3.1
100 to 249 miles 23.8 2.8 37.1 2.8 33.9 3.4
250 to 499 miles 35.0 2.6 19.7 1.2 20.7 3.5
500 to 749 miles 27.0 1.5 37.3 0.4 37.7 2.2
750 to 999 miles 37.6 1.6 43.0 0.2 42.4 1.6
1,000 to 1,499 miles 27.6 0.5 35.2 0.1 34.6 1.3
1,500 to 1,999 miles 38.4 0.6 S S S S
2,000 miles or more 19.8 0.7 42.2 0.1 43.0 2.7

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 25.0 14.9 18.5
Less than 50 miles 35.2 2.6 18.2 5.6 21.9 3.7
50 to 99 miles 26.9 3.3 42.1 3.3 43.5 3.1
100 to 249 miles 24.5 3.0 38.1 2.8 35.8 3.4
250 to 499 miles 35.9 2.8 22.5 0.7 23.0 2.4
500 to 749 miles 27.7 1.5 38.7 0.4 39.2 2.4
750 to 999 miles 38.7 1.5 43.1 0.2 42.5 1.8
1,000 to 1,499 miles 27.8 0.5 35.7 0.1 35.2 1.3
1,500 to 1,999 miles 41.5 0.7 S S S S
2,000 miles or more 24.8 0.9 45.7 0.1 47.0 2.6

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 41.5 S S 47.6
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 41.3 17.9 41.5 18.0 44.5 17.3
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 45.1 6.3 45.2 11.5

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 38.9 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 48.1 10.3 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 13.6 16.0 24.9
Less than 50 miles 42.2 3.1 49.7 1.6 S S
50 to 99 miles 32.2 2.2 28.8 3.4 28.5 0.8
100 to 249 miles 22.8 2.1 21.0 2.2 22.2 1.6
250 to 499 miles 9.5 2.3 18.2 4.5 17.9 4.9
500 to 749 miles 17.4 1.9 23.4 2.1 24.4 2.9
750 to 999 miles 21.1 1.2 17.6 1.4 17.6 2.2
1,000 to 1,499 miles 11.1 1.1 30.2 1.4 30.9 2.1
1,500 to 1,999 miles 16.4 0.3 23.7 0.4 24.0 1.1
2,000 miles or more 33.7 3.2 31.0 7.5 31.5 12.5

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 13.7 12.7 21.4
Less than 50 miles 42.2 3.2 49.7 2.5 S S
50 to 99 miles 32.2 2.4 28.8 3.7 28.5 0.8
100 to 249 miles 22.8 2.1 21.0 2.3 22.2 1.4
250 to 499 miles 9.5 2.2 18.2 3.5 17.9 3.3
500 to 749 miles 17.4 1.9 23.4 2.2 24.4 2.5
750 to 999 miles 21.1 1.2 17.6 1.2 17.6 1.3
1,000 to 1,499 miles 11.1 1.1 30.2 1.5 30.9 1.3
1,500 to 1,999 miles 16.4 0.3 23.7 0.4 24.0 1.1
2,000 miles or more 37.4 2.8 39.3 3.0 40.4 5.3

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 37.6 37.6
Less than 50 miles S S S S S S
50 to 99 miles
100 to 249 miles
250 to 499 miles
500 to 749 miles
750 to 999 miles
1,000 to 1,499 miles
1,500 to 1,999 miles
2,000 miles or more S S 37.6 37.6

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 S S S S 47.3
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 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.