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 8.5 32.7 11.7
Less than 50 miles 15.6 2.6 35.2 4.2 29.9 4.8
50 to 99 miles 17.8 1.9 35.2 2.3 33.6 1.5
100 to 249 miles 27.1 3.8 41.7 0.4 39.1 0.5
250 to 499 miles 18.9 0.9 49.2 1.2 49.3 4.7
500 to 749 miles 10.9 0.2 17.9 18.3 0.1
750 to 999 miles 32.5 0.6 34.3 33.2 0.5
1,000 to 1,499 miles 21.3 1.1 46.8 0.8 45.4 5.6
1,500 to 1,999 miles 15.8 3.0 23.5 0.2 23.5 2.6
2,000 miles or more 15.4 2.4 15.2 0.3 16.2 3.9

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 10.4 32.2 13.9
Less than 50 miles 15.6 3.9 34.5 4.1 29.9 5.1
50 to 99 miles 21.3 2.4 35.9 2.4 34.3 2.1
100 to 249 miles 33.8 5.9 44.4 0.4 42.0 0.6
250 to 499 miles 22.0 0.9 S S S S
500 to 749 miles 20.3 26.5 27.4 0.1
750 to 999 miles 41.7 0.3 38.8 36.9 0.5
1,000 to 1,499 miles 30.9 2.2 S S S S
1,500 to 1,999 miles 30.4 2.6 29.8 0.2 29.9 3.1
2,000 miles or more 25.2 3.0 17.6 0.2 19.6 3.9

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 9.2 32.3 15.2
Less than 50 miles 15.6 4.1 34.5 4.0 29.9 5.1
50 to 99 miles 22.2 2.7 35.9 2.4 34.4 2.0
100 to 249 miles 40.3 6.8 46.0 0.4 43.3 0.6
250 to 499 miles 16.2 0.9 S S S S
500 to 749 miles 20.9 0.1 26.6 27.7 0.2
750 to 999 miles 23.4 0.2 39.0 37.3 0.5
1,000 to 1,499 miles 36.0 2.5 S S S S
1,500 to 1,999 miles 36.8 3.4 30.5 0.2 30.8 3.8
2,000 miles or more 16.8 1.8 21.5 24.5 2.7

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances
Less than 50 miles
50 to 99 miles
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
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 31.3 32.4 39.0
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 39.9 5.9 48.5 4.6 46.1 0.5
250 to 499 miles S S 26.1 0.8 42.9 1.2
500 to 749 miles 41.2 S S S S
750 to 999 miles S S 49.2 0.7 40.5 0.6
1,000 to 1,499 miles 34.6 1.8 48.9 3.2 44.7 4.6
1,500 to 1,999 miles 24.6 7.9 49.2 4.7 49.2 5.8
2,000 miles or more 41.8 8.0 47.7 9.8 49.1 11.5

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 21.5 15.0 18.7
Less than 50 miles 31.2 0.5 S S 35.5
50 to 99 miles 19.4 1.0 28.9 2.3 32.0 0.2
100 to 249 miles 41.0 1.5 32.9 2.6 32.6 0.5
250 to 499 miles 21.6 2.1 14.7 2.9 14.6 1.1
500 to 749 miles 24.6 0.4 35.6 1.1 35.0 0.5
750 to 999 miles 42.6 1.1 34.5 0.8 34.2 0.6
1,000 to 1,499 miles 24.1 1.6 20.1 2.1 19.9 2.0
1,500 to 1,999 miles 27.8 3.7 15.3 1.4 15.1 3.5
2,000 miles or more 27.7 3.8 23.7 3.8 24.3 4.6

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 14.4 18.4
Less than 50 miles 31.4 0.5 S S 36.0
50 to 99 miles 19.0 1.0 26.9 2.4 26.8 0.2
100 to 249 miles 41.0 1.5 32.9 2.6 32.6 0.5
250 to 499 miles 21.6 2.1 14.7 2.9 14.6 1.1
500 to 749 miles 24.6 0.4 35.6 1.1 35.0 0.6
750 to 999 miles 42.6 1.1 34.5 0.8 34.2 0.6
1,000 to 1,499 miles 24.3 1.6 21.7 2.2 21.6 1.9
1,500 to 1,999 miles 27.9 3.7 14.9 1.4 14.7 3.5
2,000 miles or more 27.8 3.7 23.5 3.9 24.0 4.5

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 S S S S 48.1
Less than 50 miles S S S S S S
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 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

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 23.2 S S S S
Less than 50 miles 38.6 10.5 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
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 33.2 7.9 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.