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 3.9 20.6 8.9
Less than 50 miles 4.2 1.4 28.7 4.9 24.3 1.5
50 to 99 miles 15.1 0.7 24.2 0.9 22.8 0.5
100 to 249 miles 8.9 0.9 15.2 1.1 15.0 1.1
250 to 499 miles 8.2 1.0 11.6 1.2 11.3 1.6
500 to 749 miles 10.7 1.3 16.2 1.2 15.0 2.2
750 to 999 miles 8.7 0.6 25.4 2.2 23.4 4.3
1,000 to 1,499 miles 10.6 0.4 26.5 0.4 26.9 1.7
1,500 to 1,999 miles 13.0 0.7 19.6 0.4 19.9 2.5
2,000 miles or more 37.8 34.2 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 3.6 21.6 10.6
Less than 50 miles 4.8 1.8 29.8 4.9 25.5 1.6
50 to 99 miles 11.6 0.6 25.3 1.0 23.9 0.5
100 to 249 miles 9.1 0.8 15.1 1.0 15.4 1.1
250 to 499 miles 8.9 1.3 11.4 1.2 11.2 1.9
500 to 749 miles 10.5 1.2 17.6 1.1 16.4 2.1
750 to 999 miles 11.3 0.7 26.1 2.3 24.1 4.8
1,000 to 1,499 miles 12.9 0.4 10.5 0.1 10.1 0.4
1,500 to 1,999 miles 10.5 0.5 24.1 0.4 24.9 2.6
2,000 miles or more S S 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 4.4 27.4 12.4
Less than 50 miles 5.9 2.0 34.4 3.8 28.8 1.7
50 to 99 miles 12.1 0.7 30.2 1.2 29.8 1.0
100 to 249 miles 10.1 0.9 20.1 0.9 20.2 1.3
250 to 499 miles 9.5 1.4 16.1 1.1 15.3 1.9
500 to 749 miles 9.6 1.0 13.7 1.0 13.8 1.7
750 to 999 miles 14.4 0.9 18.8 0.7 19.1 1.7
1,000 to 1,499 miles 13.4 0.4 13.7 0.2 13.3 0.9
1,500 to 1,999 miles 11.7 0.5 19.0 0.3 18.8 1.9
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 28.6 47.6 39.5
Less than 50 miles S S S S S S
50 to 99 miles 37.4 1.1 45.8 1.7 46.6 0.5
100 to 249 miles 49.4 2.6 S S S S
250 to 499 miles 33.8 7.0 33.8 8.4 32.0 6.6
500 to 749 miles 47.5 5.1 S S 43.1 5.9
750 to 999 miles S S S S S S
1,000 to 1,499 miles 35.0 1.3 34.3 1.0 35.9 1.6
1,500 to 1,999 miles 48.9 7.5 48.9 3.9 49.2 7.4
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 17.5 25.6 25.2
Less than 50 miles 35.3 9.7 35.5 10.2 39.8 4.2
50 to 99 miles S S S S S S
100 to 249 miles 35.4 3.7 46.2 4.1 44.8 5.4
250 to 499 miles 40.7 2.9 S S S S
500 to 749 miles 35.9 2.6 S S S S
750 to 999 miles 26.7 7.4 28.4 11.9 29.4 9.9
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 41.3 45.0 45.7

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 17.8 28.7 24.8
Less than 50 miles 20.3 1.3 S S 47.5 2.0
50 to 99 miles 47.9 1.4 S S S S
100 to 249 miles 20.5 1.7 48.8 4.6 S S
250 to 499 miles 26.1 2.3 39.8 2.4 37.3 1.2
500 to 749 miles 27.3 3.2 29.6 5.9 29.9 4.8
750 to 999 miles 15.8 1.6 30.2 6.6 34.6 6.0
1,000 to 1,499 miles 19.1 1.6 S S S S
1,500 to 1,999 miles 30.5 1.9 21.0 2.8 22.1 6.6
2,000 miles or more 35.8 49.1 0.3 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 17.7 38.0 15.6
Less than 50 miles 21.8 1.6 S S S S
50 to 99 miles 48.3 1.4 S S S S
100 to 249 miles 21.2 2.2 S S 49.5 1.9
250 to 499 miles 25.9 2.2 28.0 2.8 27.1 2.5
500 to 749 miles 28.8 3.1 15.8 4.3 16.8 3.7
750 to 999 miles 17.6 1.0 15.9 1.8 16.3 2.5
1,000 to 1,499 miles 21.2 2.0 14.8 1.0 15.7 1.6
1,500 to 1,999 miles 26.9 1.5 17.3 1.8 17.3 3.8
2,000 miles or more 27.0 29.5 24.0 0.1

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 36.1 37.0 28.7
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 44.0 2.3 S S S S
250 to 499 miles S S S S S S
500 to 749 miles S S 38.2 10.9 38.1 7.5
750 to 999 miles 39.8 9.4 42.0 10.0 45.6 7.2
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 42.8 4.7 24.7 5.6 25.5 8.8
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 14.8 35.7 31.9
Less than 50 miles 21.7 7.3 41.6 10.6 44.9 7.0
50 to 99 miles 39.0 1.1 S S S S
100 to 249 miles 32.0 1.2 44.4 1.6 S S
250 to 499 miles 48.8 3.6 S S S S
500 to 749 miles 35.9 5.2 S S S S
750 to 999 miles 43.8 1.0 S S S S
1,000 to 1,499 miles S S 43.7 0.5 44.1 2.8
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.