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 11.6 14.9 14.7
Less than 50 miles 7.5 2.1 24.4 6.0 24.3 1.2
50 to 99 miles 15.5 1.6 17.8 1.1 17.9 0.9
100 to 249 miles 19.2 2.3 15.1 2.6 13.0 2.0
250 to 499 miles 18.0 1.2 12.8 1.8 14.6 1.9
500 to 749 miles 24.9 2.4 21.4 1.8 21.9 2.4
750 to 999 miles 21.6 1.1 31.6 0.6 29.8 2.2
1,000 to 1,499 miles 9.8 0.3 16.2 0.3 16.5 1.2
1,500 to 1,999 miles S S 34.5 34.2 0.5
2,000 miles or more 14.1 0.3 26.0 0.2 24.5 1.0

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 12.2 15.0 14.6
Less than 50 miles 7.7 2.4 24.5 6.1 24.3 1.2
50 to 99 miles 16.1 1.6 17.8 1.1 18.0 0.9
100 to 249 miles 21.5 2.4 15.8 2.7 13.7 2.1
250 to 499 miles 18.7 1.1 12.9 1.8 14.7 1.9
500 to 749 miles 24.8 2.4 21.6 1.8 22.1 2.5
750 to 999 miles 22.1 1.1 31.8 0.6 29.9 2.0
1,000 to 1,499 miles 11.1 0.3 16.2 0.3 16.5 1.2
1,500 to 1,999 miles S S 36.0 0.1 35.7 0.5
2,000 miles or more 11.3 0.3 22.7 0.2 21.9 1.0

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 11.9 15.0 15.4
Less than 50 miles 7.1 2.6 23.8 6.2 21.0 1.4
50 to 99 miles 17.4 1.7 17.2 1.3 16.3 0.9
100 to 249 miles 22.2 2.5 15.6 2.7 13.6 1.7
250 to 499 miles 18.5 1.1 11.9 1.6 12.3 1.8
500 to 749 miles 23.5 2.3 17.2 1.6 16.5 2.3
750 to 999 miles 23.4 1.2 38.0 0.7 36.8 2.5
1,000 to 1,499 miles 11.0 0.2 23.6 0.1 24.8 0.7
1,500 to 1,999 miles S S 35.3 0.1 35.2 0.6
2,000 miles or more 11.9 0.3 30.0 0.1 30.0 1.1

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 21.6 21.5 20.8
Less than 50 miles 44.2 2.3 S S S S
50 to 99 miles 33.6 5.9 38.4 4.9 42.5 2.1
100 to 249 miles 23.2 3.2 28.8 4.2 27.8 4.2
250 to 499 miles 27.7 3.6 26.4 4.0 27.4 3.7
500 to 749 miles 42.0 5.1 36.9 5.0 37.1 6.1
750 to 999 miles 18.1 1.3 15.6 1.3 16.1 2.1
1,000 to 1,499 miles 26.7 2.0 30.8 1.7 30.6 3.3
1,500 to 1,999 miles S S S S S S
2,000 miles or more 41.2 1.3 40.2 0.5 40.0 2.3

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 37.1 48.3 42.6
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 44.7 8.7 S S S S
500 to 749 miles 42.0 11.2 S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles S S 48.9 2.2 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 20.1 39.7 45.0
Less than 50 miles 26.6 1.5 25.4 2.9 18.3
50 to 99 miles 33.7 1.9 40.0 2.1 39.2 0.5
100 to 249 miles 23.4 3.6 S S S S
250 to 499 miles 38.1 3.7 26.2 4.2 27.2 3.5
500 to 749 miles 28.7 2.5 49.4 5.7 S S
750 to 999 miles 21.2 1.5 38.9 2.3 40.0 3.2
1,000 to 1,499 miles 37.8 1.7 S S S S
1,500 to 1,999 miles 40.8 1.1 35.8 0.7 36.8 1.7
2,000 miles or more 31.2 3.2 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 21.6 20.3 18.2
Less than 50 miles 27.3 1.8 20.0 1.1 19.6
50 to 99 miles 33.7 2.0 40.0 2.0 39.2 0.5
100 to 249 miles 24.6 2.6 43.2 4.6 42.0 2.2
250 to 499 miles 37.8 3.5 24.2 2.1 26.0 1.9
500 to 749 miles 29.9 2.5 22.0 2.3 21.4 1.4
750 to 999 miles 20.9 1.8 16.5 1.8 16.7 2.8
1,000 to 1,499 miles 38.6 2.5 17.5 0.7 17.9 1.4
1,500 to 1,999 miles 40.8 1.1 35.8 0.6 36.8 1.4
2,000 miles or more 31.3 2.4 21.5 2.0 22.4 4.0

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 S S S S
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 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
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 42.4 31.8 45.1
Less than 50 miles 21.4 12.1 39.6 11.4 S S
50 to 99 miles S S 36.4 3.7 40.7 4.2
100 to 249 miles S S S S S S
250 to 499 miles 41.0 1.5 43.6 1.2 45.4 5.4
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
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.