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 10.3 15.3 14.4
Less than 50 miles 11.5 3.4 15.4 3.4 19.5 1.8
50 to 99 miles 35.0 2.4 34.2 3.6 31.1 2.4
100 to 249 miles 27.4 3.4 21.2 1.0 21.7 2.2
250 to 499 miles 21.2 1.5 27.6 0.9 22.9 1.4
500 to 749 miles 12.5 0.4 9.1 0.3 8.0 1.1
750 to 999 miles 19.3 1.0 22.9 0.3 22.8 2.2
1,000 to 1,499 miles 21.4 1.6 24.9 1.5 24.7 6.1
1,500 to 1,999 miles 37.8 1.2 11.2 0.1 10.3 1.0
2,000 miles or more S S S S 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 11.1 15.4 15.3
Less than 50 miles 12.3 3.3 15.3 3.9 19.8 2.0
50 to 99 miles 34.0 2.3 34.2 3.6 31.1 2.4
100 to 249 miles 26.9 3.2 16.6 0.8 16.5 1.1
250 to 499 miles 22.5 1.6 27.6 0.9 22.9 1.4
500 to 749 miles 11.2 0.4 10.4 0.3 9.5 1.2
750 to 999 miles 21.3 1.0 24.4 0.3 24.7 2.3
1,000 to 1,499 miles 21.9 1.6 25.4 1.4 25.5 6.4
1,500 to 1,999 miles 31.8 0.9 11.6 0.1 10.6 1.0
2,000 miles or more 45.3 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 10.3 20.2 13.6
Less than 50 miles 14.4 4.6 24.7 5.4 24.2 4.0
50 to 99 miles 22.5 0.9 32.3 1.9 31.9 1.4
100 to 249 miles 29.5 3.9 14.2 1.6 14.8 1.4
250 to 499 miles 25.1 1.8 42.9 2.3 38.3 4.1
500 to 749 miles 19.0 0.6 17.3 0.5 16.4 1.4
750 to 999 miles 11.1 0.7 10.4 0.4 11.1 1.2
1,000 to 1,499 miles 38.6 2.5 13.5 0.6 12.9 2.8
1,500 to 1,999 miles 45.9 1.1 19.4 20.4 1.1
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 22.8 21.0 24.6
Less than 50 miles 23.6 4.1 20.5 3.9 15.5 0.4
50 to 99 miles 37.8 2.2 39.6 7.6 38.8 2.1
100 to 249 miles 40.1 0.8 33.9 0.4 25.6 0.2
250 to 499 miles 25.6 2.5 29.0 3.2 28.5 2.8
500 to 749 miles 17.6 1.4 27.6 1.6 25.7 1.8
750 to 999 miles 38.6 3.7 30.8 1.3 30.8 2.8
1,000 to 1,499 miles 21.9 3.2 34.7 6.1 34.3 6.7
1,500 to 1,999 miles S S 18.6 0.4 18.9 1.1
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 19.9 21.7 28.7
Less than 50 miles 17.9 4.9 19.5 4.8 38.7 4.8
50 to 99 miles 43.2 5.4 45.9 5.1 43.0 6.8
100 to 249 miles S S 44.6 1.3 43.6 5.8
250 to 499 miles 35.2 0.5 30.4 0.4 36.5 3.4
500 to 749 miles S S S S 47.3 2.7
750 to 999 miles 37.3 1.5 S S S S
1,000 to 1,499 miles 41.4 2.9 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 26.4 S S 44.2
Less than 50 miles 31.1 5.4 S S S S
50 to 99 miles 46.7 1.1 S S S S
100 to 249 miles 49.1 6.8 S S S S
250 to 499 miles 23.2 1.5 40.5 1.5 43.4 0.7
500 to 749 miles 23.7 0.5 S S S S
750 to 999 miles 27.9 1.4 S S S S
1,000 to 1,499 miles 25.2 4.3 44.1 11.4 45.4 13.5
1,500 to 1,999 miles S S 28.9 2.2 32.8 7.7
2,000 miles or more 47.2 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 32.3 29.9 40.5
Less than 50 miles 36.8 4.8 46.2 6.5 46.8 0.6
50 to 99 miles 31.1 0.4 27.2 0.5 26.8 0.1
100 to 249 miles 26.0 3.8 42.2 3.0 41.7 2.5
250 to 499 miles 23.2 1.9 40.5 2.1 43.4 2.1
500 to 749 miles 22.7 0.7 29.4 1.1 28.2 1.6
750 to 999 miles 28.4 2.0 S S S S
1,000 to 1,499 miles 27.5 3.9 38.0 2.2 37.5 3.7
1,500 to 1,999 miles S S 40.7 2.0 45.3 6.5
2,000 miles or more 46.8 0.1 40.6 39.1 0.2

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 S S S S 46.7
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
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 35.2 12.6 49.8 13.1 49.2 15.6
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 15.3 38.1 47.3
Less than 50 miles 19.6 8.0 46.8 8.8 38.4 5.6
50 to 99 miles S S S S S S
100 to 249 miles 28.5 3.1 36.2 3.7 38.9 4.6
250 to 499 miles 29.5 1.0 45.2 1.1 37.9 1.3
500 to 749 miles 45.7 0.9 47.4 2.2 46.9 2.6
750 to 999 miles S S 36.3 2.0 34.9 8.9
1,000 to 1,499 miles 43.0 3.7 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.