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 21.1 9.2 25.2
Less than 50 miles 9.5 2.6 13.9 4.9 11.7 1.2
50 to 99 miles 29.1 1.9 13.4 2.0 16.8 1.4
100 to 249 miles 25.8 1.2 9.6 1.1 12.9 3.6
250 to 499 miles 19.8 1.2 43.6 3.8 S S
500 to 749 miles 8.6 0.8 10.9 0.3 11.2 1.2
750 to 999 miles S S 35.4 0.9 36.9 2.8
1,000 to 1,499 miles 21.2 1.0 24.5 0.4 25.4 2.6
1,500 to 1,999 miles 13.6 0.4 38.3 0.2 41.2 1.1
2,000 miles or more S S 40.6 0.3 39.8 1.7

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 22.6 9.1 23.6
Less than 50 miles 9.9 2.7 13.8 5.0 11.9 1.2
50 to 99 miles 30.5 2.1 13.6 2.1 17.0 1.6
100 to 249 miles 27.1 1.3 11.0 1.3 10.7 2.7
250 to 499 miles 21.1 1.3 44.1 3.9 S S
500 to 749 miles 9.1 0.8 11.2 0.3 11.5 1.2
750 to 999 miles S S 38.1 0.9 39.3 2.9
1,000 to 1,499 miles 21.9 1.1 24.7 0.4 25.5 2.6
1,500 to 1,999 miles 12.3 0.2 23.4 0.1 24.3 1.0
2,000 miles or more S S 43.0 0.3 42.2 1.7

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 18.4 8.1 7.9
Less than 50 miles 9.5 2.2 15.3 4.6 13.9 1.1
50 to 99 miles 33.1 2.2 9.1 1.7 8.2 1.0
100 to 249 miles 30.0 2.0 8.2 1.6 6.9 1.1
250 to 499 miles 8.3 1.9 7.2 1.2 7.7 1.0
500 to 749 miles 11.0 0.8 13.7 0.5 13.4 1.1
750 to 999 miles 35.9 0.4 15.5 0.3 14.7 1.0
1,000 to 1,499 miles 17.2 0.8 18.3 0.3 18.5 1.6
1,500 to 1,999 miles 11.5 0.2 19.0 0.1 19.4 1.3
2,000 miles or more S S 47.0 0.3 46.5 2.9

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 44.3 49.5
Less than 50 miles 35.8 2.6 43.7 6.3 40.4 0.7
50 to 99 miles 24.2 0.6 40.6 1.6 36.9 0.4
100 to 249 miles 15.3 5.9 41.3 7.3 41.1 4.4
250 to 499 miles S S S S S S
500 to 749 miles 21.1 2.6 32.1 2.2 31.5 3.8
750 to 999 miles S S S S S S
1,000 to 1,499 miles 44.0 4.8 43.1 2.1 43.6 4.7
1,500 to 1,999 miles 37.5 0.9 S S S S
2,000 miles or more 45.4 1.9 36.4 0.2 36.4 1.0

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 18.5 22.1 28.3
Less than 50 miles 32.5 12.9 24.7 10.1 33.4 5.9
50 to 99 miles 48.1 9.5 36.7 7.3 40.8 9.2
100 to 249 miles 42.1 7.7 31.6 9.2 28.7 10.7
250 to 499 miles 44.9 5.2 S S S S
500 to 749 miles 25.2 0.8 27.2 28.9
750 to 999 miles 40.7 0.3 29.1 29.3
1,000 to 1,499 miles 31.6 0.2 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 12.2 45.3 S S
Less than 50 miles S S S S 42.6 0.2
50 to 99 miles 40.5 2.9 44.7 2.0 44.3 0.5
100 to 249 miles 14.3 2.2 S S S S
250 to 499 miles 15.0 2.9 48.0 7.2 48.4 4.6
500 to 749 miles 19.8 1.9 29.0 5.5 29.7 6.7
750 to 999 miles 24.1 1.0 S S S S
1,000 to 1,499 miles 16.4 1.2 37.3 4.1 38.5 5.9
1,500 to 1,999 miles 47.6 3.4 S S S S
2,000 miles or more 13.2 0.8 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 13.4 31.4 24.1
Less than 50 miles S S S S 42.6 0.3
50 to 99 miles 40.5 3.1 44.7 1.7 44.3 0.6
100 to 249 miles 12.7 1.2 44.2 2.9 40.7 1.4
250 to 499 miles 15.0 3.0 29.1 3.1 28.2 2.2
500 to 749 miles 24.7 2.0 38.9 1.9 40.5 2.7
750 to 999 miles 26.4 1.1 25.4 1.1 25.1 1.4
1,000 to 1,499 miles 13.1 0.6 23.4 1.1 22.7 1.3
1,500 to 1,999 miles 16.6 0.5 18.8 1.4 19.7 3.2
2,000 miles or more 12.2 0.9 14.5 0.8 14.4 2.5

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 37.5 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 46.7 1.5 S S S S
500 to 749 miles 43.5 11.5 49.7 12.8 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

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 25.4 36.5 38.8
Less than 50 miles 31.9 5.3 38.9 11.1 37.6 3.1
50 to 99 miles 25.7 4.3 S S S S
100 to 249 miles 28.9 8.6 S S S S
250 to 499 miles 46.6 6.2 44.3 4.7 42.2 9.1
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 38.9 1.2 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.