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 28.5 12.3 8.0
Less than 50 miles 20.7 4.3 19.1 4.4 19.5 1.4
50 to 99 miles 48.3 2.1 13.5 2.3 14.5 1.5
100 to 249 miles 27.7 1.9 18.4 3.1 19.4 3.4
250 to 499 miles S S 19.1 1.2 16.3 2.5
500 to 749 miles 32.2 1.3 15.7 0.9 15.9 2.0
750 to 999 miles 17.9 1.3 23.7 0.6 23.1 1.6
1,000 to 1,499 miles 10.0 1.5 17.4 0.4 16.9 1.9
1,500 to 1,999 miles 20.1 35.4 38.0 0.5
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 30.4 12.4 9.2
Less than 50 miles 20.3 4.2 19.2 4.1 19.7 1.4
50 to 99 miles 49.2 2.1 13.6 2.4 14.4 1.7
100 to 249 miles 29.0 2.0 18.3 3.1 18.9 3.8
250 to 499 miles S S 23.8 1.2 21.0 2.6
500 to 749 miles 34.6 1.4 17.2 1.0 17.6 2.1
750 to 999 miles 19.6 1.4 25.4 0.6 24.8 1.6
1,000 to 1,499 miles 11.1 1.4 18.4 0.4 18.1 2.0
1,500 to 1,999 miles 24.8 38.8 41.7 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 33.8 12.5 15.0
Less than 50 miles 23.7 4.5 22.2 6.1 16.2 2.7
50 to 99 miles 49.6 2.2 13.9 3.1 12.3 2.3
100 to 249 miles 36.3 1.8 24.1 3.2 25.8 3.2
250 to 499 miles S S 16.1 1.0 15.7 1.5
500 to 749 miles 37.2 1.6 29.1 0.9 30.8 1.8
750 to 999 miles 20.4 1.7 32.0 0.6 31.7 2.1
1,000 to 1,499 miles 12.1 1.9 25.8 0.4 24.8 2.5
1,500 to 1,999 miles 29.5 0.1 29.3 28.4 0.1
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 25.4 19.7 15.9
Less than 50 miles 49.8 1.5 S S S S
50 to 99 miles 31.5 1.2 29.7 4.5 31.0 2.8
100 to 249 miles 32.0 7.1 39.1 8.4 35.6 8.8
250 to 499 miles 29.5 5.5 40.2 5.2 34.1 4.9
500 to 749 miles 27.7 5.0 21.7 4.3 20.9 5.1
750 to 999 miles 41.0 1.6 28.8 0.9 30.3 1.3
1,000 to 1,499 miles 34.9 3.4 34.0 1.7 33.9 4.0
1,500 to 1,999 miles S S S S S S
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 41.8 39.3 40.9
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 S S 46.8 S S
500 to 749 miles S S 46.8 8.5 43.2 7.6
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

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 43.7 31.5 30.2
Less than 50 miles S S S S S S
50 to 99 miles 44.5 3.3 S S S S
100 to 249 miles S S 42.1 7.4 41.3 4.1
250 to 499 miles 44.5 3.2 33.7 11.0 33.9 11.6
500 to 749 miles S S 47.4 2.3 47.8 2.4
750 to 999 miles 47.9 3.7 S S S S
1,000 to 1,499 miles 43.9 4.4 26.2 9.9 31.5 10.3
1,500 to 1,999 miles 48.3 1.0 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 47.7 36.5 32.7
Less than 50 miles S S S S S S
50 to 99 miles 49.9 3.3 S S S S
100 to 249 miles S S S S S S
250 to 499 miles 47.0 3.2 43.1 2.6 41.3 2.1
500 to 749 miles S S 23.3 5.5 22.9 5.0
750 to 999 miles 48.6 5.3 43.3 4.2 40.3 3.9
1,000 to 1,499 miles S S 38.7 4.4 38.6 5.1
1,500 to 1,999 miles S S 49.5 0.4 S S
2,000 miles or more S S 47.9 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 25.9 31.9 30.8
Less than 50 miles
50 to 99 miles S S S S S S
100 to 249 miles 48.0 2.7 42.1 7.9 41.3 4.6
250 to 499 miles 40.3 10.6 33.8 11.3 34.0 11.8
500 to 749 miles S S 49.3 2.5 49.3 2.6
750 to 999 miles S S S S S S
1,000 to 1,499 miles 35.6 11.5 35.0 10.1 38.9 9.7
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 38.0 S S 40.9
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 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 42.6 9.7 46.5 5.5 S S
1,500 to 1,999 miles
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.