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 3.2 18.9 4.6
Less than 50 miles 13.6 3.6 29.7 5.4 28.4 1.7
50 to 99 miles 11.0 1.3 16.0 2.4 15.7 1.0
100 to 249 miles 10.4 1.5 9.5 1.8 9.8 1.2
250 to 499 miles 8.2 1.7 5.9 1.5 6.4 1.7
500 to 749 miles 15.5 1.8 8.8 0.7 8.8 1.1
750 to 999 miles 12.9 0.5 15.4 0.2 15.9 0.8
1,000 to 1,499 miles 13.4 0.5 16.4 0.2 16.5 1.1
1,500 to 1,999 miles 18.6 0.3 22.8 0.1 21.2 0.8
2,000 miles or more 13.5 0.6 15.8 0.2 15.7 1.9

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 3.3 18.3 5.0
Less than 50 miles 14.1 4.0 29.2 5.0 27.0 1.6
50 to 99 miles 13.1 1.4 16.3 2.4 15.9 1.1
100 to 249 miles 12.0 1.6 10.1 1.6 10.4 1.2
250 to 499 miles 8.5 1.8 6.0 1.4 6.6 1.8
500 to 749 miles 16.8 1.9 9.4 0.6 9.4 1.1
750 to 999 miles 13.2 0.5 14.9 0.2 15.6 0.7
1,000 to 1,499 miles 14.1 0.5 16.7 0.2 16.7 1.1
1,500 to 1,999 miles 19.2 0.3 23.1 0.1 21.4 0.8
2,000 miles or more 14.6 0.7 17.0 0.2 16.9 2.0

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 3.8 18.4 5.2
Less than 50 miles 14.1 4.1 29.2 5.0 26.7 1.6
50 to 99 miles 13.1 1.4 16.3 2.4 15.9 1.0
100 to 249 miles 12.0 1.7 10.6 1.7 11.0 1.4
250 to 499 miles 8.7 1.8 5.9 1.4 6.4 1.8
500 to 749 miles 17.4 1.9 9.9 0.6 10.0 1.2
750 to 999 miles 13.3 0.5 14.9 0.2 15.6 0.8
1,000 to 1,499 miles 12.3 0.4 16.7 0.2 16.7 1.2
1,500 to 1,999 miles 19.6 0.3 23.2 0.1 21.5 0.8
2,000 miles or more 15.0 0.5 18.5 0.2 18.5 2.0

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 44.2 38.0 44.1
Less than 50 miles S S S S S S
50 to 99 miles
100 to 249 miles S S S S S S
250 to 499 miles 39.8 12.4 41.0 12.0 42.2 12.6
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
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 38.9 36.1 36.4
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 29.7 11.4 S S S S
750 to 999 miles S S 42.9 0.6 42.4 0.9
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 46.4 8.9 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 14.4 20.0 19.2
Less than 50 miles 29.3 1.1 43.3 2.4 47.3 0.1
50 to 99 miles 28.9 2.1 26.2 2.6 26.5 0.4
100 to 249 miles 27.9 3.1 39.3 4.4 36.6 1.2
250 to 499 miles 13.1 2.1 17.9 2.7 21.2 1.6
500 to 749 miles 17.9 1.5 14.6 1.9 15.2 2.4
750 to 999 miles 23.9 1.5 25.3 1.0 28.0 1.6
1,000 to 1,499 miles 39.3 3.1 31.8 3.0 32.5 3.4
1,500 to 1,999 miles 29.5 0.9 24.9 0.8 22.9 2.4
2,000 miles or more 21.5 0.9 27.3 1.9 27.8 5.7

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 14.1 19.6 13.1
Less than 50 miles 29.3 1.1 43.3 2.6 47.3 0.1
50 to 99 miles 28.9 2.2 26.2 3.0 26.5 0.5
100 to 249 miles 28.3 3.4 40.3 5.6 38.6 2.9
250 to 499 miles 11.6 2.0 16.3 2.5 17.7 1.8
500 to 749 miles 17.3 1.9 14.1 1.9 14.6 2.8
750 to 999 miles 27.7 1.4 27.8 0.9 28.3 1.5
1,000 to 1,499 miles 39.3 3.1 31.9 3.2 32.6 3.8
1,500 to 1,999 miles 31.1 0.9 27.7 0.9 26.0 2.3
2,000 miles or more 21.1 1.0 24.3 2.0 24.0 4.9

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 38.4 35.9
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 S S 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 42.7 14.8 40.7 14.0

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 17.8 S S 26.7
Less than 50 miles 29.0 10.1 S S S S
50 to 99 miles 36.3 3.9 40.2 4.5 37.9 1.3
100 to 249 miles S S S S S S
250 to 499 miles 25.6 1.8 43.6 2.9 45.3 1.7
500 to 749 miles 35.5 3.9 40.3 3.9 40.9 8.2
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

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.