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 27.8 34.4 16.7
Less than 50 miles 16.9 5.3 S S S S
50 to 99 miles 14.9 0.9 15.6 1.2 16.3 0.7
100 to 249 miles 37.0 2.3 13.1 3.5 13.5 2.7
250 to 499 miles 42.0 5.5 15.4 3.2 15.5 4.3
500 to 749 miles 37.9 0.6 22.7 0.8 24.3 1.3
750 to 999 miles 16.7 1.1 28.5 1.3 29.5 3.4
1,000 to 1,499 miles 48.1 1.0 S S S S
1,500 to 1,999 miles 32.1 0.1 27.8 27.5 0.2
2,000 miles or more 16.0 0.3 S S S S

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 30.4 35.3 17.1
Less than 50 miles 17.1 6.2 S S S S
50 to 99 miles 14.6 0.9 15.4 1.3 16.1 0.8
100 to 249 miles 38.6 2.4 13.2 3.6 13.7 2.9
250 to 499 miles 43.5 6.2 15.9 3.3 15.9 4.3
500 to 749 miles 46.8 0.7 24.0 0.8 25.8 1.5
750 to 999 miles 16.6 0.8 31.8 1.3 33.1 3.1
1,000 to 1,499 miles 26.1 0.3 S S S S
1,500 to 1,999 miles S S 29.4 29.1 0.2
2,000 miles or more 19.7 0.3 S S S S

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 31.0 37.5 20.3
Less than 50 miles 17.1 6.4 S S S S
50 to 99 miles 14.6 0.9 15.4 1.4 16.1 0.8
100 to 249 miles 38.8 2.4 13.5 3.8 14.0 2.8
250 to 499 miles 44.5 6.5 17.3 3.0 17.6 4.5
500 to 749 miles S S 25.8 0.6 26.2 1.2
750 to 999 miles 17.8 0.7 38.3 1.1 39.6 2.2
1,000 to 1,499 miles 26.7 0.3 S S S S
1,500 to 1,999 miles S S 29.4 29.1 0.3
2,000 miles or more 22.5 0.3 S S S S

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 41.4 36.5 42.2
Less than 50 miles 49.8 3.7 S S S S
50 to 99 miles
100 to 249 miles 37.1 3.0 34.5 2.8 33.0 1.0
250 to 499 miles 36.1 7.9 31.7 7.2 29.8 11.4
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
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 30.3 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 46.6 3.4 36.6 7.1 S S
250 to 499 miles 32.1 11.5 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 40.6 9.8 32.4 10.9 34.7 14.2

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 21.1 40.2 38.3
Less than 50 miles 18.0 1.4 22.7 1.5 26.8
50 to 99 miles 26.0 1.2 34.0 0.6 33.2 0.1
100 to 249 miles 26.8 1.7 35.1 3.5 32.4 1.4
250 to 499 miles 18.7 2.8 48.9 10.3 49.1 7.1
500 to 749 miles 22.6 2.5 46.4 2.6 48.2 1.9
750 to 999 miles 32.9 4.5 26.9 6.0 26.8 6.0
1,000 to 1,499 miles S S 45.9 1.2 45.9 2.3
1,500 to 1,999 miles 24.5 0.6 33.7 0.2 35.1 0.9
2,000 miles or more 25.0 1.2 49.4 0.6 46.9 2.6

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 22.1 21.4 30.0
Less than 50 miles 18.9 1.5 22.1 1.9 31.1
50 to 99 miles 26.0 1.3 34.0 0.7 33.2 0.1
100 to 249 miles 26.9 1.8 35.6 3.0 33.0 1.2
250 to 499 miles 19.3 2.9 28.8 4.9 27.6 3.9
500 to 749 miles 24.2 2.7 24.7 1.9 24.9 1.8
750 to 999 miles 34.8 4.8 22.1 2.7 21.6 2.3
1,000 to 1,499 miles S S 45.9 1.7 45.9 2.7
1,500 to 1,999 miles 24.5 0.6 33.7 0.6 35.1 2.1
2,000 miles or more 24.9 1.3 S S S S

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 36.9 S S 47.5
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 40.1 9.8 S S S S
500 to 749 miles S S S S S S
750 to 999 miles 42.3 9.3 41.0 7.2 40.6 8.2
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 33.8 35.6 36.8
Less than 50 miles 38.1 9.0 49.7 8.7 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 42.7 0.9 41.4 4.1
500 to 749 miles S S S S S S
750 to 999 miles S S 42.0 9.7 42.8 11.4
1,000 to 1,499 miles 36.0 0.8 43.5 2.5 43.6 4.5
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.