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 4.6 11.0 27.1
Less than 50 miles 10.6 3.3 14.6 5.1 25.0 0.9
50 to 99 miles 11.9 1.5 21.5 2.6 27.1 1.0
100 to 249 miles 9.2 0.9 10.1 1.2 9.8 1.1
250 to 499 miles 8.3 0.8 8.0 0.7 8.4 1.5
500 to 749 miles 14.1 1.5 26.2 1.7 24.7 4.5
750 to 999 miles 13.5 1.1 17.9 1.5 17.8 4.4
1,000 to 1,499 miles 14.2 0.7 S S S S
1,500 to 1,999 miles 18.0 0.4 12.2 0.1 12.4 0.9
2,000 miles or more 38.6 0.1 38.4 38.2 0.3

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 5.6 10.8 28.2
Less than 50 miles 11.6 3.5 13.2 5.1 26.9 0.9
50 to 99 miles 12.3 1.5 21.2 2.4 27.9 1.0
100 to 249 miles 10.4 0.9 10.2 1.2 9.9 1.1
250 to 499 miles 8.7 0.8 8.0 0.8 8.4 1.7
500 to 749 miles 16.0 1.7 26.4 1.8 24.9 4.5
750 to 999 miles 14.0 1.2 17.9 1.6 17.8 4.7
1,000 to 1,499 miles 16.4 0.8 S S S S
1,500 to 1,999 miles 21.2 0.4 13.7 0.1 14.0 0.9
2,000 miles or more 42.6 0.2 38.5 38.4 0.3

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 6.2 20.1 S S
Less than 50 miles 6.9 2.1 17.1 5.2 16.7 2.5
50 to 99 miles 17.5 2.0 17.5 1.5 18.2 1.7
100 to 249 miles 15.1 2.2 20.1 2.2 19.8 3.5
250 to 499 miles 10.5 0.9 16.8 1.7 15.4 4.3
500 to 749 miles 8.6 0.7 24.8 1.2 23.3 4.0
750 to 999 miles 13.3 0.6 9.7 0.5 10.2 2.8
1,000 to 1,499 miles 20.1 1.0 S S S S
1,500 to 1,999 miles 26.9 0.5 19.3 0.2 18.8 2.2
2,000 miles or more S S 38.6 38.7 0.1

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 12.8 11.7 12.8
Less than 50 miles 31.9 1.4 30.1 1.2 29.9
50 to 99 miles 17.9 1.5 17.2 1.0 18.9 0.2
100 to 249 miles 18.5 1.5 21.7 2.3 21.6 0.9
250 to 499 miles 12.6 2.7 7.9 1.6 7.8 1.4
500 to 749 miles 12.0 2.2 29.8 3.6 29.6 3.7
750 to 999 miles 26.6 2.8 17.8 3.0 18.2 3.5
1,000 to 1,499 miles 27.8 3.0 16.7 1.3 17.2 2.0
1,500 to 1,999 miles 25.8 1.3 18.3 0.6 18.5 1.7
2,000 miles or more 48.7 0.6 39.8 0.2 39.7 0.7

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 10.9 11.8 18.4
Less than 50 miles 21.6 8.8 21.3 8.9 S S
50 to 99 miles 31.8 4.2 32.0 3.8 43.5 1.8
100 to 249 miles 24.7 1.3 23.2 2.5 19.6 1.9
250 to 499 miles 21.5 1.0 15.3 0.9 18.0 2.3
500 to 749 miles 36.6 5.2 42.1 4.7 39.4 8.5
750 to 999 miles 35.8 2.8 31.1 3.0 28.7 6.4
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 44.1 S S S S
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 13.3 47.2 S S
Less than 50 miles 43.3 4.0 S S 36.9
50 to 99 miles 40.5 3.4 S S S S
100 to 249 miles 24.6 1.8 41.2 7.3 42.8 3.4
250 to 499 miles 27.3 3.3 S S S S
500 to 749 miles 28.0 4.0 S S S S
750 to 999 miles 24.8 2.0 33.9 1.2 33.8 1.0
1,000 to 1,499 miles 25.7 5.7 S S S S
1,500 to 1,999 miles 38.2 1.6 S S S S
2,000 miles or more 45.9 0.2 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 14.8 27.6 36.3
Less than 50 miles 43.3 4.2 S S 36.9 0.3
50 to 99 miles 28.7 2.6 31.4 3.2 32.2 0.9
100 to 249 miles 26.8 2.1 44.8 4.5 41.0 2.4
250 to 499 miles 28.0 3.1 34.2 4.2 34.3 4.7
500 to 749 miles 28.9 3.9 35.8 4.7 36.0 4.6
750 to 999 miles 25.4 2.1 47.6 2.5 47.4 3.2
1,000 to 1,499 miles 36.7 4.2 S S S S
1,500 to 1,999 miles 28.0 0.8 S S S S
2,000 miles or more 47.4 0.2 39.5 0.2 40.1 0.8

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 36.6 49.8 S S
Less than 50 miles
50 to 99 miles S S S S S S
100 to 249 miles 43.4 4.1 44.5 7.7 46.0 3.5
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

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 28.7 S S 42.6
Less than 50 miles 39.4 9.8 S S S S
50 to 99 miles 25.0 2.0 S S S S
100 to 249 miles S S S S S S
250 to 499 miles 38.6 4.6 38.4 5.3 36.7 9.2
500 to 749 miles S S S S S S
750 to 999 miles 47.3 2.7 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.