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 5.8 8.3 12.6
Less than 50 miles 13.6 2.8 16.6 5.7 13.1 0.6
50 to 99 miles 9.9 0.8 33.0 3.5 32.5 1.3
100 to 249 miles 9.8 2.0 18.5 3.3 18.0 2.3
250 to 499 miles 10.0 1.3 23.4 3.0 20.3 4.2
500 to 749 miles 5.8 0.2 14.7 0.3 14.8 1.1
750 to 999 miles 6.4 0.7 22.4 0.9 20.2 2.4
1,000 to 1,499 miles 7.6 0.5 27.7 1.2 33.2 4.5
1,500 to 1,999 miles 13.4 0.3 27.8 0.3 30.1 2.2
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 5.6 8.9 13.1
Less than 50 miles 13.0 2.9 16.7 5.5 13.6 0.6
50 to 99 miles 10.6 0.8 33.4 3.6 33.0 1.3
100 to 249 miles 11.5 2.2 18.3 3.5 17.9 2.5
250 to 499 miles 9.5 1.3 24.2 3.1 21.3 4.3
500 to 749 miles 5.7 0.2 14.0 0.3 13.3 1.1
750 to 999 miles 6.6 0.7 22.8 0.9 20.6 2.5
1,000 to 1,499 miles 7.6 0.4 27.8 1.2 33.4 4.5
1,500 to 1,999 miles 14.2 0.3 24.2 0.3 25.6 1.8
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 5.8 13.2 12.3
Less than 50 miles 13.2 3.2 19.0 5.5 21.3 1.7
50 to 99 miles 10.6 0.9 43.5 3.8 41.1 2.0
100 to 249 miles 13.8 2.3 21.1 2.2 22.2 2.3
250 to 499 miles 11.2 1.7 17.6 1.2 16.3 1.4
500 to 749 miles 8.7 0.6 19.0 0.5 18.7 1.8
750 to 999 miles 7.1 0.6 14.2 0.5 14.0 1.5
1,000 to 1,499 miles 9.2 0.7 11.8 0.5 12.2 1.8
1,500 to 1,999 miles 17.1 0.4 28.6 0.2 28.8 1.7
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 12.9 24.9 15.5
Less than 50 miles 27.4 1.3 S S S S
50 to 99 miles 30.7 1.6 S S S S
100 to 249 miles 14.9 2.1 38.5 8.5 35.2 4.4
250 to 499 miles 36.2 2.2 30.3 1.5 33.0 1.8
500 to 749 miles 15.9 1.1 22.4 1.8 22.5 1.4
750 to 999 miles 13.4 2.6 16.8 2.8 18.0 2.3
1,000 to 1,499 miles 12.7 1.6 18.0 2.6 18.0 2.4
1,500 to 1,999 miles 25.1 1.2 20.2 0.9 19.6 1.8
2,000 miles or more S S S S S S

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 22.3 22.2 24.9
Less than 50 miles 39.3 7.2 40.7 7.9 39.6 0.9
50 to 99 miles 19.2 2.1 18.6 1.7 30.3 0.3
100 to 249 miles 24.8 4.6 33.2 5.0 37.9 3.6
250 to 499 miles 44.5 6.4 46.1 7.0 45.8 10.5
500 to 749 miles S S S S S S
750 to 999 miles 36.5 4.9 39.6 4.6 34.7 10.0
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 14.5 33.4 38.9
Less than 50 miles S S 48.6 2.4 44.1
50 to 99 miles 30.2 2.6 S S S S
100 to 249 miles 34.4 2.3 S S S S
250 to 499 miles 16.2 2.0 S S S S
500 to 749 miles 23.5 2.4 S S S S
750 to 999 miles 14.5 2.5 S S S S
1,000 to 1,499 miles 24.2 3.4 30.0 9.1 30.9 12.5
1,500 to 1,999 miles 21.6 2.5 S S S S
2,000 miles or more 34.6 0.4 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 16.5 22.2 28.9
Less than 50 miles S S 46.4 6.9 S S
50 to 99 miles 26.6 2.9 27.7 2.7 30.1 0.8
100 to 249 miles 35.3 2.6 31.1 2.0 28.1 0.7
250 to 499 miles 17.2 2.2 23.0 3.6 22.8 2.5
500 to 749 miles 26.0 2.6 35.1 2.9 33.8 1.7
750 to 999 miles 15.3 1.4 34.1 1.9 33.7 2.0
1,000 to 1,499 miles 22.4 2.5 33.2 3.4 33.7 3.8
1,500 to 1,999 miles 19.3 1.4 27.1 0.7 27.3 1.0
2,000 miles or more 38.4 0.4 S S 47.9 0.8

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 16.3 35.6 41.2
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 33.6 12.4 36.3 13.8 36.7 14.6
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 46.1 34.1 27.3
Less than 50 miles 42.8 9.8 35.6 12.2 37.4 10.9
50 to 99 miles S S 38.9 3.1 42.0 1.3
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 49.4 1.0 48.6 4.3
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

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.