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 8.9 11.9 14.9
Less than 50 miles 24.6 5.6 14.5 2.8 15.9 1.2
50 to 99 miles 35.8 3.6 21.2 2.2 21.6 2.5
100 to 249 miles 10.5 1.2 14.7 1.0 14.4 1.8
250 to 499 miles 16.2 3.5 12.5 0.7 12.9 2.4
500 to 749 miles 19.9 2.7 25.0 0.7 26.0 2.6
750 to 999 miles 18.7 0.7 15.9 16.1 0.5
1,000 to 1,499 miles 31.1 0.9 47.9 0.2 45.9 2.0
1,500 to 1,999 miles 37.7 0.3 34.3 34.1 0.5
2,000 miles or more 19.3 0.7 35.5 0.3 34.9 3.5

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 9.2 12.1 15.4
Less than 50 miles 25.3 5.8 14.7 2.8 16.3 1.3
50 to 99 miles 36.3 3.7 21.6 2.2 21.9 2.5
100 to 249 miles 9.6 1.3 14.9 1.0 14.5 1.8
250 to 499 miles 17.3 3.9 12.8 0.7 13.2 2.4
500 to 749 miles 23.0 2.9 25.8 0.7 26.9 2.6
750 to 999 miles 22.0 0.6 17.8 18.0 0.4
1,000 to 1,499 miles 35.7 1.0 48.5 0.2 46.5 2.1
1,500 to 1,999 miles 40.0 0.3 34.7 34.5 0.5
2,000 miles or more 25.4 0.7 36.3 0.3 35.7 3.5

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 9.9 12.2 16.0
Less than 50 miles 25.3 5.9 14.8 2.8 16.6 1.5
50 to 99 miles 36.3 3.7 21.6 2.2 21.9 2.7
100 to 249 miles 10.1 1.3 15.8 1.1 15.5 1.8
250 to 499 miles 18.3 3.8 12.5 0.7 13.1 2.6
500 to 749 miles 24.0 3.0 26.3 0.7 27.3 2.7
750 to 999 miles 22.0 0.7 19.1 19.2 0.4
1,000 to 1,499 miles 36.2 1.0 48.8 0.2 46.8 2.1
1,500 to 1,999 miles 40.0 0.3 35.3 35.0 0.5
2,000 miles or more 28.1 0.7 36.4 0.3 35.8 3.5

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 39.7 38.8 36.0
Less than 50 miles S S S S S S
50 to 99 miles
100 to 249 miles 47.3 11.5 45.7 10.4 42.1 9.8
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 49.7 10.2 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

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 30.1 32.2 29.7
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles S S S S S S
250 to 499 miles 40.8 10.5 48.8 9.5 47.0 7.6
500 to 749 miles 34.1 6.7 27.8 6.0 28.0 6.2
750 to 999 miles 42.4 1.6 S S S S
1,000 to 1,499 miles 35.5 0.7 S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more 41.9 5.2 48.5 2.7 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 14.7 25.6 28.8
Less than 50 miles S S S S S S
50 to 99 miles 31.0 0.5 49.9 1.0 45.7 0.1
100 to 249 miles 19.5 1.6 26.1 2.6 23.1 0.7
250 to 499 miles 20.0 3.7 34.1 4.3 36.3 2.7
500 to 749 miles 21.4 4.2 12.3 2.9 12.4 2.6
750 to 999 miles 27.6 2.6 S S S S
1,000 to 1,499 miles 23.9 2.3 22.9 1.3 22.5 1.9
1,500 to 1,999 miles 18.8 0.4 25.8 0.7 25.2 1.8
2,000 miles or more 26.8 1.6 29.0 1.3 28.0 3.9

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 14.7 25.8 29.3
Less than 50 miles S S S S S S
50 to 99 miles 31.0 0.5 49.9 1.0 45.7 0.1
100 to 249 miles 19.5 1.6 26.1 2.7 23.1 0.7
250 to 499 miles 20.0 3.7 34.1 4.3 36.3 2.7
500 to 749 miles 21.4 4.3 12.3 2.9 12.4 2.7
750 to 999 miles 27.6 2.6 S S S S
1,000 to 1,499 miles 23.9 2.3 22.9 1.2 22.5 1.9
1,500 to 1,999 miles 18.8 0.4 25.8 0.7 25.2 1.8
2,000 miles or more 26.8 1.6 30.3 1.2 29.3 3.6

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
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 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 S S S S 35.5
Less than 50 miles 49.8 12.4 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 43.7 5.5 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.