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 10.3 20.8 38.1
Less than 50 miles 17.9 2.8 22.4 6.3 16.6 1.8
50 to 99 miles 15.7 1.2 S S S S
100 to 249 miles 21.2 2.2 30.1 1.5 33.8 3.0
250 to 499 miles 19.2 2.5 12.4 1.1 12.0 2.9
500 to 749 miles 15.0 2.0 S S S S
750 to 999 miles 29.7 1.5 25.2 0.2 26.4 1.6
1,000 to 1,499 miles 19.4 1.0 16.1 0.3 15.8 2.0
1,500 to 1,999 miles 21.5 0.7 21.7 0.1 22.4 1.2
2,000 miles or more S S 39.7 0.3 39.4 4.5

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 12.4 20.5 40.4
Less than 50 miles 18.7 3.4 22.6 6.6 16.7 1.8
50 to 99 miles 15.8 1.3 S S S S
100 to 249 miles 23.5 2.3 10.3 1.6 9.4 2.8
250 to 499 miles 22.0 2.6 12.3 1.0 11.6 2.9
500 to 749 miles 16.5 2.3 S S S S
750 to 999 miles 37.1 1.8 25.8 0.2 27.0 1.6
1,000 to 1,499 miles 26.3 0.9 16.7 0.3 16.4 2.2
1,500 to 1,999 miles 35.8 0.6 29.1 0.1 29.6 1.3
2,000 miles or more S S 42.4 0.2 42.2 4.9

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 12.5 20.5 40.7
Less than 50 miles 18.7 3.6 22.6 6.6 16.7 1.9
50 to 99 miles 16.0 1.4 S S S S
100 to 249 miles 23.6 2.4 10.3 1.6 9.4 2.8
250 to 499 miles 24.2 2.7 12.2 1.0 11.5 2.9
500 to 749 miles 17.0 2.3 S S S S
750 to 999 miles 37.2 1.9 25.7 0.2 26.9 1.6
1,000 to 1,499 miles 27.6 0.9 17.6 0.2 17.4 2.1
1,500 to 1,999 miles 36.8 0.6 29.2 0.1 29.6 1.3
2,000 miles or more S S 42.6 0.2 42.5 4.9

Rail

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
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

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 25.7 29.2 20.7
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 34.9 1.6 44.8 1.6 46.7 1.1
250 to 499 miles 33.6 8.3 S S S S
500 to 749 miles 29.4 2.0 S S 49.1 1.8
750 to 999 miles 45.4 0.4 S S S S
1,000 to 1,499 miles 38.3 1.2 S S S S
1,500 to 1,999 miles 48.7 2.2 S S S S
2,000 miles or more 35.3 8.1 31.6 9.3 34.1 10.9

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 18.8 18.3 25.7
Less than 50 miles 18.5 2.7 29.6 3.2 30.7 0.1
50 to 99 miles 36.0 3.0 27.9 2.9 25.6 0.5
100 to 249 miles 17.8 5.3 35.0 8.4 35.2 7.4
250 to 499 miles 22.1 2.1 38.6 3.0 40.3 1.4
500 to 749 miles 35.8 2.7 28.1 1.8 29.0 1.5
750 to 999 miles 31.0 2.5 S S S S
1,000 to 1,499 miles 42.9 2.8 46.8 2.0 44.3 3.5
1,500 to 1,999 miles 37.9 3.5 S S S S
2,000 miles or more 23.3 1.2 40.4 3.3 40.0 8.8

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 24.8 40.0
Less than 50 miles 18.5 2.8 29.6 4.2 30.7 0.4
50 to 99 miles 37.7 3.1 29.9 3.6 27.5 1.7
100 to 249 miles 17.8 5.3 35.0 8.4 35.2 7.0
250 to 499 miles 22.1 1.9 38.6 2.9 40.3 1.4
500 to 749 miles 35.8 2.8 28.1 2.0 29.0 1.6
750 to 999 miles 31.0 3.0 S S S S
1,000 to 1,499 miles 42.9 2.8 46.8 2.0 44.3 2.9
1,500 to 1,999 miles 36.4 1.6 42.7 1.4 41.9 3.7
2,000 miles or more 26.1 1.5 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 S S S S 48.3
Less than 50 miles
50 to 99 miles S S S S S S
100 to 249 miles
250 to 499 miles
500 to 749 miles
750 to 999 miles
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 31.0 S S S S
Less than 50 miles 48.9 11.2 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 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.