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 19.2 28.0 25.3
Less than 50 miles 27.5 2.3 S S 21.8 0.8
50 to 99 miles 12.8 1.0 27.4 3.3 26.5 1.5
100 to 249 miles 11.9 1.7 40.9 3.4 44.8 2.9
250 to 499 miles 16.9 2.1 23.5 4.1 22.4 5.2
500 to 749 miles 18.7 2.6 S S 45.5 2.6
750 to 999 miles 36.5 2.9 24.0 0.7 24.1 1.7
All modes 1,000 to 1,499 miles 37.4 1.1 42.2 0.3 46.7 1.2
1,500 to 1,999 miles 32.2 1.8 27.8 1.2 27.6 4.1
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 21.0 28.7 27.2
Less than 50 miles 30.0 2.8 S S 22.0 0.9
50 to 99 miles 13.9 1.1 27.7 3.2 26.8 1.4
100 to 249 miles 13.1 2.1 41.2 3.4 45.1 3.0
250 to 499 miles 19.1 2.2 23.8 4.2 22.6 5.1
500 to 749 miles 20.9 2.8 S S 49.9 2.8
750 to 999 miles 41.9 3.4 24.4 0.6 24.4 1.8
1,000 to 1,499 miles 42.7 1.1 42.3 0.3 47.0 1.3
1,500 to 1,999 miles 34.0 2.0 23.5 0.3 24.4 2.5
2,000 miles or more S S 47.2 46.1

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 23.2 14.8 15.0
Less than 50 miles 11.3 4.4 26.9 6.1 17.0 0.8
50 to 99 miles 13.9 1.7 27.8 3.1 26.9 2.0
100 to 249 miles 12.4 2.7 25.7 3.0 26.1 4.0
250 to 499 miles 25.1 2.7 20.8 2.7 21.1 1.8
500 to 749 miles 24.2 2.8 21.9 1.9 22.9 3.5
750 to 999 miles 47.1 4.6 18.8 0.6 18.6 1.6
1,000 to 1,499 miles 48.2 1.5 21.7 0.2 23.4 0.9
1,500 to 1,999 miles 43.0 2.6 23.7 0.3 24.7 2.3
2,000 miles or more

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 29.5 46.9 43.3
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 33.3 8.5 40.1 8.5 37.8 9.7
500 to 749 miles 44.4 1.6 S S S S
750 to 999 miles 20.4 5.1 37.9 4.0 36.8 5.1
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 41.8 3.1 42.6 2.6 42.3 4.3
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 22.7 S S 44.4
Less than 50 miles S S S S S S
50 to 99 miles
100 to 249 miles 40.8 5.3 S S S S
250 to 499 miles 38.6 5.4 S S 41.1 15.6
500 to 749 miles 36.3 3.7 S S S S
750 to 999 miles 19.4 2.4 31.9 1.3 35.7 1.8
1,000 to 1,499 miles 33.0 1.6 45.8 1.1 38.8 1.6
1,500 to 1,999 miles 33.8 3.5 21.2 2.2 21.4 4.1
2,000 miles or more S S 47.2 46.1 0.2

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 14.9 33.5 44.9
Less than 50 miles 42.7 1.0 29.3 0.4 34.3
50 to 99 miles 32.7 0.4 47.2 0.4 48.7
100 to 249 miles 20.6 1.5 23.3 2.1 24.2 0.5
250 to 499 miles 18.3 2.3 16.8 2.1 15.9 1.3
500 to 749 miles 28.7 4.3 26.4 7.5 29.7 7.3
750 to 999 miles 24.7 3.8 42.8 4.1 42.6 4.0
1,000 to 1,499 miles 31.7 3.8 S S S S
1,500 to 1,999 miles 18.0 1.3 S S S S
2,000 miles or more S S 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 15.1 27.2 34.4
Less than 50 miles 42.7 1.0 29.3 0.5 34.3
50 to 99 miles 32.7 0.5 47.2 0.4 48.7
100 to 249 miles 20.6 1.5 23.3 2.8 24.2 0.8
250 to 499 miles 18.9 3.0 22.2 2.4 21.8 1.9
500 to 749 miles 29.4 4.4 24.0 3.3 24.0 3.4
750 to 999 miles 24.6 3.9 43.8 3.6 44.4 3.3
1,000 to 1,499 miles 31.7 3.9 S S S S
1,500 to 1,999 miles 22.2 1.5 40.8 3.1 39.9 4.2
2,000 miles or more S S 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 49.6 S S S S
Less than 50 miles
50 to 99 miles
100 to 249 miles
250 to 499 miles S S S S S S
500 to 749 miles S S 49.1 11.4 48.7 11.4
750 to 999 miles S S S S S S
1,000 to 1,499 miles
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 31.2 38.8 40.7
Less than 50 miles 37.0 7.8 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 45.9 9.9 42.0 15.4 42.8 15.4
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 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.