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 6.5 31.3 13.6
Less than 50 miles 18.9 4.2 S S S S
50 to 99 miles 14.1 2.2 38.0 6.3 43.0 4.4
100 to 249 miles 6.7 1.7 15.8 2.8 16.5 3.5
250 to 499 miles 13.0 0.5 17.1 0.8 15.6 1.0
500 to 749 miles 22.8 1.2 17.9 0.3 17.2 0.6
750 to 999 miles 17.5 0.9 38.4 1.2 36.8 3.1
1,000 to 1,499 miles 12.1 0.6 S S S S
1,500 to 1,999 miles 19.1 1.3 18.8 0.6 18.5 3.1
2,000 miles or more 14.1 0.9 19.5 0.4 19.9 2.9

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 6.6 33.8 14.3
Less than 50 miles 20.6 4.3 S S S S
50 to 99 miles 13.1 2.4 38.3 6.4 43.6 4.5
100 to 249 miles 6.6 1.9 15.9 3.7 16.6 3.7
250 to 499 miles 12.7 0.6 17.9 0.9 16.6 0.9
500 to 749 miles 25.6 1.1 18.1 0.4 17.5 0.6
750 to 999 miles 18.4 1.1 39.6 1.3 37.9 3.2
1,000 to 1,499 miles 14.6 0.7 S S S S
1,500 to 1,999 miles 18.5 1.2 20.0 0.7 19.8 3.3
2,000 miles or more 18.6 1.1 18.2 0.4 18.9 2.8

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 6.6 S S 12.3
Less than 50 miles 14.6 3.5 S S S S
50 to 99 miles 9.9 1.3 20.7 6.1 21.2 1.6
100 to 249 miles 10.4 2.2 17.0 3.4 17.9 2.1
250 to 499 miles 14.4 0.9 16.3 1.0 19.1 1.2
500 to 749 miles 29.0 1.4 15.8 0.5 15.3 0.7
750 to 999 miles 18.9 1.0 22.0 0.8 22.2 2.4
1,000 to 1,499 miles 18.2 1.0 17.5 0.5 17.6 2.0
1,500 to 1,999 miles 21.7 1.7 22.4 0.6 22.3 3.0
2,000 miles or more 21.9 1.1 24.1 0.5 25.1 2.6

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 20.0 28.0 32.4
Less than 50 miles 44.0 10.8 43.7 13.8 32.4 0.8
50 to 99 miles 30.9 0.2 35.4 0.7 38.6 0.1
100 to 249 miles 29.1 2.9 S S S S
250 to 499 miles 40.7 1.5 S S S S
500 to 749 miles 36.9 2.3 35.2 4.8 32.8 3.8
750 to 999 miles S S S S S S
1,000 to 1,499 miles 33.8 1.4 S S S S
1,500 to 1,999 miles 21.7 5.1 24.5 3.3 24.5 4.9
2,000 miles or more 16.5 2.6 17.3 2.7 17.5 6.3

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 14.6 35.0 29.2
Less than 50 miles S S S S S S
50 to 99 miles 18.9 8.3 49.3 8.7 S S
100 to 249 miles 21.6 7.2 26.4 6.2 27.4 8.3
250 to 499 miles 36.6 0.5 32.5 0.7 31.9 2.1
500 to 749 miles 39.0 0.2 S S S S
750 to 999 miles 32.8 0.6 S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 29.6 0.9 S S S S
2,000 miles or more 19.5 0.2 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 28.4 13.8 17.8
Less than 50 miles 30.2 3.9 S S 32.5
50 to 99 miles S S 28.5 1.8 25.7 0.1
100 to 249 miles 37.6 2.7 39.5 2.8 44.9 0.7
250 to 499 miles 32.5 1.7 47.4 2.0 45.5 0.8
500 to 749 miles S S S S S S
750 to 999 miles 34.3 1.3 46.5 3.8 47.8 2.6
1,000 to 1,499 miles 33.6 1.9 42.5 2.7 42.6 3.0
1,500 to 1,999 miles 29.6 2.8 18.1 4.7 19.3 6.3
2,000 miles or more 27.0 3.6 35.8 7.1 34.4 7.3

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 32.2 44.4 48.9
Less than 50 miles 31.4 4.7 25.4 6.8 27.2 0.4
50 to 99 miles S S 47.1 2.6 47.2 0.6
100 to 249 miles 38.9 2.8 49.6 2.4 S S
250 to 499 miles 32.6 2.3 S S S S
500 to 749 miles S S 41.0 1.5 41.2 2.0
750 to 999 miles 42.2 1.0 S S S S
1,000 to 1,499 miles 37.2 2.8 S S S S
1,500 to 1,999 miles 38.6 3.2 S S S S
2,000 miles or more 34.8 4.0 41.5 1.8 40.9 5.6

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 20.5 17.3 20.4
Less than 50 miles S S S S S S
50 to 99 miles 46.5 1.0 S S 44.6 0.2
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 42.1 4.0 S S S S
1,000 to 1,499 miles 26.2 3.4 40.3 4.5 41.1 3.7
1,500 to 1,999 miles 20.9 3.9 23.4 5.5 24.5 7.2
2,000 miles or more 27.2 4.6 38.4 7.8 36.7 7.7

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 15.1 33.3 26.9
Less than 50 miles 19.1 8.1 41.4 18.1 42.0 9.8
50 to 99 miles S S 37.4 14.9 37.2 12.4
100 to 249 miles S S 39.4 5.5 39.3 6.3
250 to 499 miles S S S S S S
500 to 749 miles S S S S S S
750 to 999 miles 44.3 1.9 S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 44.0 4.6 39.4 2.4 33.1 7.8
2,000 miles or more 30.8 1.7 48.8 0.2 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.