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 8.0 22.3 26.2
Less than 50 miles 22.2 4.4 21.4 3.8 40.2 0.8
50 to 99 miles 18.6 1.3 27.0 1.3 27.0 0.8
100 to 249 miles 10.4 1.8 33.4 4.2 34.4 5.8
250 to 499 miles 11.3 1.8 43.3 1.6 47.2 3.5
500 to 749 miles 9.3 1.1 41.4 4.2 44.4 9.6
750 to 999 miles 10.3 0.8 24.5 0.4 24.7 2.1
1,000 to 1,499 miles 19.8 0.6 27.7 0.3 26.5 1.6
1,500 to 1,999 miles 13.7 0.7 24.7 0.3 25.3 3.7
2,000 miles or more 26.2 34.9 37.9

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 9.2 22.2 26.7
Less than 50 miles 23.9 4.9 21.5 3.9 40.3 1.0
50 to 99 miles 21.6 1.5 27.2 1.3 27.2 0.8
100 to 249 miles 11.7 2.5 33.6 4.2 34.7 6.0
250 to 499 miles 15.3 2.3 44.2 1.7 48.0 4.2
500 to 749 miles 15.4 1.2 42.2 4.2 45.6 9.8
750 to 999 miles 12.1 0.9 28.0 0.4 28.4 1.9
1,000 to 1,499 miles 27.6 0.8 33.7 0.3 31.9 1.5
1,500 to 1,999 miles 21.1 0.8 29.9 0.3 30.4 3.4
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 9.3 11.5 26.0
Less than 50 miles 24.0 5.2 8.3 6.2 10.1 1.4
50 to 99 miles 21.6 1.5 27.2 1.3 27.2 0.8
100 to 249 miles 11.8 2.6 33.8 4.8 35.0 5.5
250 to 499 miles 16.4 2.4 43.0 2.8 47.0 4.6
500 to 749 miles 16.0 1.1 18.1 0.7 16.5 2.5
750 to 999 miles 14.6 1.0 29.6 0.5 30.2 2.2
1,000 to 1,499 miles 27.5 0.8 37.5 0.2 36.9 1.4
1,500 to 1,999 miles 19.8 0.6 30.8 0.2 31.3 2.6
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 38.5 S S S S
Less than 50 miles S S S S S S
50 to 99 miles
100 to 249 miles 43.0 4.8 39.8 5.8 40.3 3.0
250 to 499 miles S S S S S S
500 to 749 miles 37.4 6.1 S S S S
750 to 999 miles 44.2 8.4 S S S S
1,000 to 1,499 miles 38.7 7.0 26.2 10.4 23.0 12.1
1,500 to 1,999 miles S S 48.8 6.3 48.8 7.9
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 23.0 S S S S
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 43.6 3.4 48.9 2.5 S S
250 to 499 miles 42.6 4.6 46.9 10.5 47.2 7.2
500 to 749 miles 37.2 10.6 S S S S
750 to 999 miles 25.7 6.5 43.1 4.8 44.6 4.6
1,000 to 1,499 miles 48.5 1.8 45.6 1.5 45.0 2.1
1,500 to 1,999 miles 41.6 4.2 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 11.6 30.6 47.5
Less than 50 miles 19.1 2.6 38.6 4.3 21.0 0.2
50 to 99 miles 35.0 0.9 30.2 1.2 27.3 0.2
100 to 249 miles 16.4 1.5 22.5 1.7 22.3 0.9
250 to 499 miles 18.9 2.3 39.4 5.4 49.8 4.4
500 to 749 miles 13.9 1.9 23.8 2.9 24.6 4.0
750 to 999 miles 14.7 1.5 36.0 3.6 37.9 5.6
1,000 to 1,499 miles 43.0 1.8 48.7 2.7 44.5 3.2
1,500 to 1,999 miles 21.1 2.9 S S S S
2,000 miles or more 34.8 0.1 48.2 46.4 0.6

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 14.0 17.4 20.7
Less than 50 miles 19.1 2.6 38.6 4.6 21.0 0.2
50 to 99 miles 35.0 0.9 30.2 1.2 27.3 0.3
100 to 249 miles 16.4 1.7 22.5 2.5 22.3 1.3
250 to 499 miles 19.0 2.0 20.3 3.2 20.1 2.4
500 to 749 miles 17.0 2.1 32.9 2.4 33.6 2.5
750 to 999 miles 15.7 1.5 26.1 1.7 26.0 2.7
1,000 to 1,499 miles 45.2 1.9 31.3 1.1 30.3 1.8
1,500 to 1,999 miles 22.8 0.7 28.6 0.6 28.6 2.9
2,000 miles or more 43.7 0.1 S S S S

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 40.9 S S S S
Less than 50 miles S S S S S S
50 to 99 miles
100 to 249 miles
250 to 499 miles S S S S S S
500 to 749 miles S S S S S S
750 to 999 miles 48.6 11.0 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 31.4 S S S S
Less than 50 miles 46.3 11.4 28.8 15.5 41.9 9.9
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 35.8 7.3 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 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.