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 12.4 27.6 25.9
Less than 50 miles 16.3 2.6 28.4 3.3 28.8 1.0
50 to 99 miles 23.1 0.7 27.2 1.6 27.2 0.8
100 to 249 miles 32.2 1.8 37.9 1.3 38.5 1.5
250 to 499 miles 20.5 2.0 38.7 1.8 39.4 4.5
500 to 749 miles 17.5 0.8 25.6 0.5 24.5 2.2
750 to 999 miles 25.0 1.6 44.1 0.3 45.7 2.2
1,000 to 1,499 miles 11.9 1.5 S S 42.3 4.0
1,500 to 1,999 miles 18.5 1.5 36.9 0.2 37.5 2.3
2,000 miles or more 27.4 1.9 31.3 30.9 1.1

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 14.5 27.0 26.4
Less than 50 miles 17.3 2.5 27.7 3.4 28.5 1.1
50 to 99 miles 24.3 0.9 27.2 1.6 27.3 0.9
100 to 249 miles 34.3 1.8 38.4 1.4 38.9 1.5
250 to 499 miles 22.8 1.7 39.1 1.9 39.7 4.7
500 to 749 miles 17.2 0.7 26.5 0.5 25.3 2.3
750 to 999 miles 25.0 1.5 44.8 0.3 46.3 2.3
1,000 to 1,499 miles 20.1 1.7 S S 42.7 4.1
1,500 to 1,999 miles 22.0 1.3 39.0 0.2 39.7 2.4
2,000 miles or more 35.3 2.3 38.6 38.6 1.1

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 19.3 27.2 28.3
Less than 50 miles 17.3 1.6 27.7 3.3 28.5 1.1
50 to 99 miles 24.3 1.2 27.2 1.7 27.3 1.0
100 to 249 miles 34.5 1.7 38.4 1.4 38.9 1.6
250 to 499 miles 30.0 1.9 39.8 1.8 40.8 4.5
500 to 749 miles 22.3 0.8 28.8 0.5 27.9 2.5
750 to 999 miles 30.6 0.9 44.9 0.3 46.5 2.4
1,000 to 1,499 miles 22.6 1.4 S S 49.8 3.5
1,500 to 1,999 miles 21.9 0.7 42.2 0.2 43.1 2.7
2,000 miles or more 42.8 0.7 40.2 40.4 1.1

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances S S S S S S
Less than 50 miles
50 to 99 miles
100 to 249 miles
250 to 499 miles S S S S S S
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 S S S S S S
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 24.3 S S S S
Less than 50 miles
50 to 99 miles
100 to 249 miles S S S S S S
250 to 499 miles 27.1 4.3 S S 47.9 5.9
500 to 749 miles S S 37.6 2.2 35.2 3.8
750 to 999 miles 34.6 5.0 34.0 5.1 35.9 5.3
1,000 to 1,499 miles 31.9 5.5 S S S S
1,500 to 1,999 miles 37.7 4.7 42.1 9.8 41.0 10.4
2,000 miles or more 42.2 5.4 34.6 2.3 34.9 3.5

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 18.7 20.2 16.7
Less than 50 miles 22.3 2.0 31.7 4.7 37.6 0.1
50 to 99 miles 31.0 0.3 44.1 1.1 45.7 0.2
100 to 249 miles 47.4 2.7 S S 44.7 1.0
250 to 499 miles 34.8 4.5 43.3 4.6 44.6 2.3
500 to 749 miles 27.8 2.1 33.4 1.8 33.7 1.9
750 to 999 miles 33.9 5.0 16.9 2.1 16.7 1.9
1,000 to 1,499 miles 26.6 2.9 34.7 5.7 38.4 7.0
1,500 to 1,999 miles 32.0 3.2 23.8 2.2 23.8 3.7
2,000 miles or more 23.5 1.3 21.2 2.6 20.7 4.4

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 18.9 22.9 20.0
Less than 50 miles 22.3 2.0 31.8 4.5 37.7 0.1
50 to 99 miles 31.0 0.3 44.1 1.3 45.7 0.2
100 to 249 miles 47.4 2.7 S S 44.7 1.0
250 to 499 miles 34.8 4.5 43.3 4.6 44.6 2.3
500 to 749 miles 27.8 2.1 33.4 1.9 33.7 1.9
750 to 999 miles 33.9 5.0 16.9 3.0 16.7 3.2
1,000 to 1,499 miles 27.0 2.6 24.8 3.3 25.8 4.9
1,500 to 1,999 miles 32.0 3.2 23.8 2.3 23.8 3.4
2,000 miles or more 24.0 1.4 29.6 1.1 29.8 3.4

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
250 to 499 miles
500 to 749 miles
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 47.2 16.5 46.7 15.2

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 30.7
Less than 50 miles 30.1 16.0 S S S S
50 to 99 miles S S S S S S
100 to 249 miles 48.4 3.4 S S S S
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

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.