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 5.4 13.8 37.0
Less than 50 miles 9.8 3.3 15.9 3.3 13.2 2.7
50 to 99 miles 15.8 1.2 10.7 0.9 10.2 0.8
100 to 249 miles 15.3 2.3 13.7 1.3 15.3 1.6
250 to 499 miles 12.7 0.8 15.5 0.8 14.6 1.6
500 to 749 miles 19.6 0.9 26.6 0.4 29.2 1.2
750 to 999 miles 14.0 0.8 36.3 0.4 35.3 1.1
1,000 to 1,499 miles 9.9 0.6 S S S S
1,500 to 1,999 miles 15.0 0.6 48.2 0.2 S S
2,000 miles or more 7.5 0.4 17.9 0.2 18.2 3.3

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 8.7 14.3 40.2
Less than 50 miles 11.7 3.9 16.2 3.4 13.5 2.9
50 to 99 miles 17.2 1.3 11.4 0.9 10.9 0.9
100 to 249 miles 19.4 2.6 14.6 1.3 16.3 1.6
250 to 499 miles 18.4 0.9 16.8 0.7 16.1 1.8
500 to 749 miles 26.8 1.1 27.5 0.4 30.2 1.2
750 to 999 miles 16.0 0.9 40.1 0.4 39.2 0.8
1,000 to 1,499 miles 10.6 0.8 S S S S
1,500 to 1,999 miles 21.0 0.5 S S S S
2,000 miles or more 19.7 0.6 21.6 0.2 22.3 3.1

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 9.0 13.2 35.4
Less than 50 miles 11.8 4.1 16.2 3.5 13.6 2.9
50 to 99 miles 17.1 1.3 11.4 0.9 10.9 0.8
100 to 249 miles 20.5 2.6 14.7 1.3 16.3 1.5
250 to 499 miles 19.3 1.0 16.9 0.7 16.2 1.7
500 to 749 miles 28.4 1.1 21.1 0.4 21.3 1.3
750 to 999 miles 16.7 1.0 37.2 0.4 36.0 0.8
1,000 to 1,499 miles 14.1 1.0 S S S S
1,500 to 1,999 miles 23.1 0.5 16.5 0.1 16.8 1.4
2,000 miles or more 20.3 0.6 21.3 0.2 22.0 3.0

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 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

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 23.4 26.7 29.9
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 42.3 10.6 40.4 12.0 36.5 6.6
250 to 499 miles 30.1 3.9 46.7 2.0 39.7 1.2
500 to 749 miles 44.6 2.1 31.0 2.9 31.2 2.2
750 to 999 miles 49.3 2.3 S S 47.6 2.0
1,000 to 1,499 miles S S 47.8 4.4 47.0 6.5
1,500 to 1,999 miles 27.3 2.4 S S S S
2,000 miles or more 33.6 4.2 29.1 5.1 29.1 6.4

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 14.7 31.9 37.1
Less than 50 miles 10.8 1.5 S S S S
50 to 99 miles 38.1 1.9 S S S S
100 to 249 miles 25.9 3.1 24.7 3.9 25.5 2.4
250 to 499 miles 14.3 0.8 20.9 1.8 21.6 1.1
500 to 749 miles 18.0 0.9 21.1 1.4 21.0 1.3
750 to 999 miles 20.6 1.8 S S S S
1,000 to 1,499 miles 13.9 1.6 32.2 1.4 34.9 1.7
1,500 to 1,999 miles 33.4 1.1 26.1 0.6 26.0 1.5
2,000 miles or more 15.8 1.3 40.8 2.6 42.5 5.4

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 36.2 15.3
Less than 50 miles 10.8 1.9 S S S S
50 to 99 miles 38.1 1.9 S S S S
100 to 249 miles 25.9 3.0 26.0 3.3 27.0 2.1
250 to 499 miles 14.3 0.8 20.9 1.6 21.6 0.9
500 to 749 miles 18.0 0.9 21.1 1.3 21.0 1.0
750 to 999 miles 22.7 1.3 21.9 1.5 22.3 1.2
1,000 to 1,499 miles 14.6 1.6 22.1 1.5 22.0 2.1
1,500 to 1,999 miles 33.4 1.1 26.1 0.6 26.0 1.3
2,000 miles or more 16.9 1.3 18.1 2.7 18.0 5.3

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
100 to 249 miles S S S S S S
250 to 499 miles
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
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 19.5 21.1 35.3
Less than 50 miles 22.5 7.9 32.6 8.5 14.9 2.8
50 to 99 miles 32.6 1.2 45.9 3.7 S S
100 to 249 miles 29.6 2.8 40.0 4.9 39.5 6.0
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 46.7 1.6 45.1 2.7
1,000 to 1,499 miles 34.0 0.7 49.3 1.5 48.8 6.1
1,500 to 1,999 miles S S S S S S
2,000 miles or more 48.7 3.2 38.2 2.0 37.8 9.3

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.