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 6.1 19.9 11.6
Less than 50 miles 11.4 3.8 33.9 5.7 23.0 1.3
50 to 99 miles 16.3 1.4 14.9 1.6 15.4 0.5
100 to 249 miles 10.8 2.2 14.9 2.4 13.7 1.9
250 to 499 miles 15.8 1.7 24.8 2.5 30.1 4.8
500 to 749 miles 12.7 0.8 10.1 1.1 9.8 3.0
750 to 999 miles 20.4 0.9 28.1 0.6 27.2 2.7
1,000 to 1,499 miles 15.3 0.3 16.5 15.8 0.4
1,500 to 1,999 miles 15.3 0.6 17.9 0.2 18.0 1.8
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 7.4 20.3 12.4
Less than 50 miles 14.1 4.1 34.1 5.8 23.2 1.5
50 to 99 miles 20.0 1.9 15.6 1.6 15.7 0.6
100 to 249 miles 10.7 2.6 14.6 2.3 13.5 1.9
250 to 499 miles 18.7 2.0 27.1 2.7 32.6 5.4
500 to 749 miles 14.3 1.0 12.7 1.2 12.1 3.5
750 to 999 miles 23.6 0.9 30.3 0.7 29.5 3.1
1,000 to 1,499 miles 19.1 0.4 18.8 18.0 0.4
1,500 to 1,999 miles 24.1 0.8 22.7 0.2 23.2 1.9
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 8.2 25.3 9.5
Less than 50 miles 14.5 4.4 37.4 6.4 28.5 2.8
50 to 99 miles 20.2 2.0 16.5 1.9 15.5 0.9
100 to 249 miles 12.6 3.0 17.5 2.7 16.7 2.8
250 to 499 miles 18.5 1.8 17.3 1.7 17.0 2.2
500 to 749 miles 16.4 1.1 17.3 1.1 17.5 2.9
750 to 999 miles 25.0 0.9 37.2 1.3 36.7 4.0
1,000 to 1,499 miles 24.2 0.4 19.8 0.1 18.8 0.6
1,500 to 1,999 miles 27.1 0.8 23.0 0.2 23.6 2.4
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 18.1 22.3 28.2
Less than 50 miles 32.0 3.2 27.2 7.2 29.8 1.8
50 to 99 miles 29.3 1.3 S S 49.9 0.7
100 to 249 miles S S 49.8 2.7 47.3 2.6
250 to 499 miles 29.1 5.6 40.5 6.0 44.1 8.6
500 to 749 miles 26.6 4.6 29.0 4.6 28.0 7.2
750 to 999 miles 43.9 1.5 S S S S
1,000 to 1,499 miles S S 49.8 0.1 49.8 0.5
1,500 to 1,999 miles 35.1 0.8 40.7 0.2 41.1 0.9
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 43.8 33.2 16.0
Less than 50 miles S S S S 46.3 0.6
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles 13.4 3.9 S S S S
500 to 749 miles 21.8 10.2 23.0 13.7 23.4 12.5
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 36.0 36.5
2,000 miles or more 41.9 0.1 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 19.4 32.8 25.3
Less than 50 miles 41.5 2.5 23.5 0.7 30.1
50 to 99 miles 37.5 3.7 27.4 2.6 26.3 0.3
100 to 249 miles 22.2 3.1 S S S S
250 to 499 miles 22.7 1.5 S S S S
500 to 749 miles 27.5 2.1 29.9 2.2 30.7 1.9
750 to 999 miles 34.5 2.1 43.5 2.6 44.0 2.9
1,000 to 1,499 miles 22.4 1.6 18.3 4.4 19.1 5.3
1,500 to 1,999 miles 26.6 1.9 29.5 4.0 30.4 6.3
2,000 miles or more S S 38.9 43.6 0.3

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 15.4 16.7 17.2
Less than 50 miles 41.5 2.6 23.5 1.1 30.1 0.1
50 to 99 miles 37.5 3.8 24.5 2.6 22.4 0.5
100 to 249 miles 21.8 3.1 26.5 2.2 25.4 1.1
250 to 499 miles 16.8 1.7 29.9 3.6 29.6 3.2
500 to 749 miles 23.1 2.5 20.0 2.6 20.6 2.6
750 to 999 miles 15.7 1.5 14.6 1.5 14.5 2.0
1,000 to 1,499 miles 32.9 0.8 23.8 1.0 24.1 1.3
1,500 to 1,999 miles 28.3 1.8 30.3 2.4 30.8 4.6
2,000 miles or more S S 43.7 43.9 0.5

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 37.3 36.2 27.4
Less than 50 miles
50 to 99 miles S S S S S S
100 to 249 miles 45.8 2.9 S S S S
250 to 499 miles 47.1 4.4 S S S S
500 to 749 miles 46.7 5.1 39.6 2.7 38.9 1.9
750 to 999 miles S S S S S S
1,000 to 1,499 miles 27.1 9.7 19.3 6.4 20.3 6.9
1,500 to 1,999 miles 29.5 8.4 31.1 6.8 32.0 8.4
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 32.8 26.2 32.0
Less than 50 miles 44.3 10.2 35.2 12.5 47.5 6.6
50 to 99 miles S S S S S S
100 to 249 miles 47.2 6.5 33.0 10.2 32.1 9.6
250 to 499 miles 41.0 3.5 S S S S
500 to 749 miles 39.4 1.7 S S S S
750 to 999 miles 39.8 1.0 46.6 0.4 46.6 2.8
1,000 to 1,499 miles 47.8 0.4 49.0 0.3 49.0 0.9
1,500 to 1,999 miles 47.6 2.1 35.0 0.7 35.2 3.5
2,000 miles or more

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.