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 9.6 14.8 21.2
Less than 50 miles 18.8 2.8 18.9 4.5 32.0 1.0
50 to 99 miles 10.8 0.7 19.2 1.3 19.4 1.2
100 to 249 miles 14.7 0.9 40.1 6.5 40.1 8.9
250 to 499 miles 11.9 1.1 31.3 1.7 31.6 2.0
500 to 749 miles 17.4 1.6 41.2 1.5 36.8 2.8
750 to 999 miles 11.6 1.2 26.7 1.5 26.4 3.4
1,000 to 1,499 miles 14.5 1.4 30.5 4.4 30.7 9.6
1,500 to 1,999 miles 13.7 0.7 22.1 0.1 21.8 0.6
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 11.8 14.2 17.6
Less than 50 miles 20.1 3.5 19.3 4.6 27.9 0.8
50 to 99 miles 13.0 0.7 19.3 1.3 19.7 1.2
100 to 249 miles 15.0 1.3 41.1 6.5 42.5 8.9
250 to 499 miles 14.7 1.3 30.8 1.8 31.2 2.1
500 to 749 miles 18.5 2.3 41.0 1.6 36.6 3.1
750 to 999 miles 16.1 1.5 26.9 1.4 26.1 3.5
1,000 to 1,499 miles 22.4 1.7 26.3 3.5 26.9 8.6
1,500 to 1,999 miles 21.8 0.7 24.4 0.1 23.9 0.5
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 12.7 19.6 32.2
Less than 50 miles 20.5 3.9 20.7 6.1 30.3 2.2
50 to 99 miles 13.1 0.8 18.6 1.3 18.5 1.3
100 to 249 miles 15.6 1.5 S S S S
250 to 499 miles 15.2 1.4 36.8 2.2 38.1 4.1
500 to 749 miles 24.4 2.5 S S S S
750 to 999 miles 20.5 1.6 44.2 0.6 44.1 2.4
1,000 to 1,499 miles 23.2 1.7 46.7 0.5 45.0 2.6
1,500 to 1,999 miles 29.9 0.8 31.0 0.2 30.2 1.5
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 20.1 18.3 20.3
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 34.7 6.2 43.7 6.7 40.1 2.3
250 to 499 miles 42.0 4.6 44.3 2.1 45.0 1.9
500 to 749 miles S S 28.5 2.9 28.6 3.6
750 to 999 miles 28.8 9.2 30.5 8.1 30.7 8.1
1,000 to 1,499 miles 23.6 3.5 28.3 7.7 28.7 9.7
1,500 to 1,999 miles S S 48.7 2.1 49.4 3.2
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 S S
Less than 50 miles
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles 43.4 1.2 S S 49.7 0.9
500 to 749 miles 43.0 7.5 31.3 5.1 34.7 5.0
750 to 999 miles 22.9 5.5 S S S S
1,000 to 1,499 miles 38.5 8.1 25.8 10.3 24.6 10.3
1,500 to 1,999 miles 33.5 3.4 43.8 6.7 44.8 7.6
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 18.9 37.2 40.1
Less than 50 miles 27.4 2.4 S S S S
50 to 99 miles 21.8 1.4 24.4 0.6 27.1
100 to 249 miles 32.2 2.0 S S S S
250 to 499 miles S S 32.3 1.0 34.3 0.4
500 to 749 miles 21.1 0.8 33.8 1.9 33.9 1.2
750 to 999 miles 21.6 2.6 S S S S
1,000 to 1,499 miles 21.5 2.6 45.1 14.4 45.2 15.1
1,500 to 1,999 miles 22.9 2.4 32.1 4.9 33.6 7.0
2,000 miles or more S S 41.2 0.8 41.8 2.0

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 20.0 22.9 26.1
Less than 50 miles 30.3 1.3 S S S S
50 to 99 miles 21.8 1.7 24.4 1.3 27.1 0.2
100 to 249 miles 33.4 2.2 33.3 2.5 37.3 0.9
250 to 499 miles S S 32.3 0.6 34.3 0.3
500 to 749 miles 21.2 0.8 39.5 1.5 39.5 1.0
750 to 999 miles 21.6 2.9 26.9 5.7 26.3 5.2
1,000 to 1,499 miles 23.0 2.2 37.5 5.3 37.2 6.0
1,500 to 1,999 miles 22.9 2.4 32.1 3.8 33.6 5.1
2,000 miles or more S S S S 37.1 1.1

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 48.9 38.3 41.0
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
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 43.3 14.1 45.6 13.1 45.6 13.6
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 29.2 S S S S
Less than 50 miles 41.6 6.9 44.7 10.3 S S
50 to 99 miles 33.2 9.4 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 47.0 3.1 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.