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 10.0 33.4 19.7
Less than 50 miles 19.5 4.0 42.5 8.0 39.3 4.9
50 to 99 miles 22.7 1.9 S S S S
100 to 249 miles 16.0 2.9 11.2 3.0 12.1 2.5
250 to 499 miles 21.4 2.4 37.7 3.0 36.5 3.0
500 to 749 miles 37.3 4.4 22.1 0.8 22.9 2.3
750 to 999 miles 28.2 1.2 S S S S
1,000 to 1,499 miles 28.8 0.7 28.9 0.2 28.1 0.8
1,500 to 1,999 miles 20.3 1.3 29.9 0.7 30.0 4.9
2,000 miles or more 27.1 0.1 S S 49.7 0.3

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 10.8 33.7 21.9
Less than 50 miles 19.8 3.3 42.7 7.9 39.4 5.4
50 to 99 miles 23.8 2.1 S S S S
100 to 249 miles 16.0 3.3 11.2 3.1 12.1 3.6
250 to 499 miles 20.4 2.3 38.2 3.0 37.0 3.2
500 to 749 miles 44.0 4.9 22.7 0.8 23.6 2.2
750 to 999 miles 31.7 1.3 S S S S
1,000 to 1,499 miles 33.7 0.8 29.3 0.2 28.5 1.0
1,500 to 1,999 miles 22.9 0.8 45.1 0.4 43.3 2.5
2,000 miles or more 49.2 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 11.1 33.8 22.1
Less than 50 miles 19.8 3.3 42.7 7.9 39.5 5.5
50 to 99 miles 23.8 2.1 S S S S
100 to 249 miles 16.2 3.4 11.1 3.2 11.9 3.7
250 to 499 miles 21.2 2.5 42.5 3.0 42.2 3.0
500 to 749 miles 45.8 5.0 24.3 0.9 25.6 2.5
750 to 999 miles 33.6 1.3 S S S S
1,000 to 1,499 miles 35.2 0.8 29.6 0.2 28.8 1.0
1,500 to 1,999 miles 23.4 0.4 45.5 0.4 43.7 2.5
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 S S S S S S
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
1,000 to 1,499 miles
1,500 to 1,999 miles
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 45.2 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 48.4 10.8 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 24.3 41.5 S S
Less than 50 miles 37.3 5.3 41.1 6.6 43.8 2.1
50 to 99 miles S S S S S S
100 to 249 miles 32.9 5.2 39.5 5.1 37.1 3.2
250 to 499 miles 34.8 6.6 S S S S
500 to 749 miles 47.9 2.7 38.0 2.2 33.8 2.8
750 to 999 miles S S 36.6 2.2 37.0 2.8
1,000 to 1,499 miles 37.7 1.4 28.9 2.0 28.3 4.2
1,500 to 1,999 miles 38.8 7.3 S S S S
2,000 miles or more 36.7 1.2 38.3 0.8 49.4 4.5

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 26.5 40.0 31.3
Less than 50 miles 37.3 5.2 41.1 5.7 43.8 2.0
50 to 99 miles S S S S S S
100 to 249 miles 32.9 5.3 39.5 5.4 37.1 3.2
250 to 499 miles 36.2 6.4 22.5 5.3 22.3 3.2
500 to 749 miles 48.2 3.8 40.6 3.9 36.5 4.1
750 to 999 miles S S 36.6 2.4 37.0 2.5
1,000 to 1,499 miles 37.9 1.4 29.8 1.7 29.1 3.2
1,500 to 1,999 miles 35.8 1.6 43.7 1.3 45.0 3.6
2,000 miles or more 38.3 1.3 27.4 0.3 29.5 1.8

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
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 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 S S 45.2 31.1
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 38.4 2.1 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.