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 6.8 20.0 29.4
Less than 50 miles 9.0 3.0 28.6 6.1 23.8 2.9
50 to 99 miles 12.5 0.8 46.4 4.4 45.4 1.7
100 to 249 miles 12.2 0.7 27.4 1.6 25.1 1.8
250 to 499 miles 17.6 2.1 28.1 0.7 26.9 1.4
500 to 749 miles 13.9 0.7 37.3 1.3 35.3 4.4
750 to 999 miles 16.4 0.7 27.5 0.4 26.8 2.2
1,000 to 1,499 miles 24.1 2.5 46.3 4.1 46.0 9.1
1,500 to 1,999 miles 24.4 0.6 38.0 0.1 37.1 0.9
2,000 miles or more 20.7 1.6 33.4 0.7 45.0 4.0

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 8.3 20.2 22.6
Less than 50 miles 9.7 4.0 29.3 6.3 24.0 3.0
50 to 99 miles 19.0 1.0 46.8 4.5 45.9 1.9
100 to 249 miles 16.6 1.0 28.7 1.7 26.5 1.9
250 to 499 miles 20.6 1.9 31.1 0.7 30.2 1.1
500 to 749 miles 18.9 1.2 38.6 1.3 36.9 4.5
750 to 999 miles 21.0 1.3 29.3 0.4 28.8 2.0
1,000 to 1,499 miles 28.4 2.8 44.2 4.1 44.4 10.4
1,500 to 1,999 miles 25.2 0.7 39.7 0.1 39.1 0.9
2,000 miles or more 22.3 0.9 27.6 0.7 27.4 3.8

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 8.3 21.5 17.1
Less than 50 miles 9.7 4.0 29.5 5.7 24.0 2.8
50 to 99 miles 19.6 0.9 46.8 4.8 45.9 2.8
100 to 249 miles 17.2 1.0 28.9 1.7 26.8 1.7
250 to 499 miles 20.8 2.1 31.3 0.8 30.5 1.0
500 to 749 miles 18.9 1.2 35.2 1.2 33.0 3.8
750 to 999 miles 22.2 1.3 29.4 0.4 28.9 2.0
1,000 to 1,499 miles 31.7 2.7 42.5 0.9 41.1 4.4
1,500 to 1,999 miles 25.1 0.6 40.0 0.1 39.4 0.8
2,000 miles or more 24.9 1.0 27.8 1.0 27.5 5.6

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 S S S S S S
50 to 99 miles
100 to 249 miles
250 to 499 miles
500 to 749 miles S S S S S S
750 to 999 miles
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 28.3 43.4 S S
Less than 50 miles S S S S S S
50 to 99 miles S S S S 40.2 0.6
100 to 249 miles 30.1 1.5 S S S S
250 to 499 miles 36.0 1.6 S S S S
500 to 749 miles 29.5 3.8 37.5 8.4 37.5 5.9
750 to 999 miles 40.0 1.6 35.2 2.9 33.9 2.5
1,000 to 1,499 miles 47.0 11.3 S S S S
1,500 to 1,999 miles 45.5 2.2 46.5 0.4 47.1 1.4
2,000 miles or more 18.3 7.0 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 13.0 S S S S
Less than 50 miles 19.2 2.3 33.7 5.9 46.0 0.7
50 to 99 miles 28.8 1.6 19.3 2.1 22.6 0.6
100 to 249 miles 12.1 1.7 22.5 3.7 19.5 2.1
250 to 499 miles 41.0 4.9 15.7 1.5 16.3 1.3
500 to 749 miles 16.9 0.6 17.3 1.5 22.0 2.6
750 to 999 miles 17.2 1.3 30.8 3.2 36.9 5.8
1,000 to 1,499 miles 27.7 3.0 S S S S
1,500 to 1,999 miles 27.1 0.8 40.1 1.1 42.2 2.4
2,000 miles or more 27.0 3.3 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 14.0 14.0 19.0
Less than 50 miles 17.7 1.9 17.9 3.0 20.1 0.1
50 to 99 miles 32.3 1.6 17.7 1.4 16.5 0.2
100 to 249 miles 12.9 1.6 24.8 2.6 22.4 1.0
250 to 499 miles 41.4 4.9 16.5 1.0 16.0 0.8
500 to 749 miles 14.7 0.7 14.1 1.3 14.6 1.6
750 to 999 miles 15.5 1.8 28.9 2.2 28.5 2.3
1,000 to 1,499 miles 16.3 1.4 28.2 2.0 27.9 3.1
1,500 to 1,999 miles 26.4 0.8 42.2 1.1 44.7 2.2
2,000 miles or more 29.7 3.0 20.9 1.7 20.0 4.0

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 S S
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 46.2 4.7
250 to 499 miles S S S S S S
500 to 749 miles S S S S 46.5 2.7
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

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 23.8 47.4 29.2
Less than 50 miles 32.1 7.5 S S 45.6 6.4
50 to 99 miles S S 40.0 0.7 46.2 0.3
100 to 249 miles 34.1 2.6 S S S S
250 to 499 miles 27.8 1.0 S S S S
500 to 749 miles S S 45.5 0.9 S S
750 to 999 miles S S 44.6 1.5 42.3 6.4
1,000 to 1,499 miles S S 43.9 4.7 43.6 8.3
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.