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 49.5 12.5 11.2
Less than 50 miles 8.5 4.9 20.5 5.5 21.0 2.2
50 to 99 miles 15.0 2.9 19.6 2.3 21.7 1.5
100 to 249 miles 36.4 2.1 23.4 2.8 20.9 2.3
250 to 499 miles 40.5 0.8 21.5 0.7 21.4 1.1
500 to 749 miles 29.7 1.7 28.3 0.8 27.6 1.8
750 to 999 miles S S 17.3 0.3 17.4 0.9
1,000 to 1,499 miles 27.7 1.7 17.5 0.4 17.9 1.5
1,500 to 1,999 miles S S 31.6 0.4 31.5 2.9
2,000 miles or more S S 14.8 0.2 15.1 2.1

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 S S 12.8 12.1
Less than 50 miles 9.5 6.2 20.2 5.5 20.9 2.2
50 to 99 miles 16.0 3.1 18.6 2.1 20.3 1.4
100 to 249 miles 32.5 2.1 25.0 2.8 22.8 2.3
250 to 499 miles 39.3 0.8 22.6 0.7 22.5 1.1
500 to 749 miles 28.7 2.1 32.2 0.8 31.4 2.1
750 to 999 miles S S 17.1 0.3 17.4 0.7
1,000 to 1,499 miles 28.0 1.3 13.4 0.2 13.5 1.1
1,500 to 1,999 miles S S 34.5 0.4 34.4 3.3
2,000 miles or more S S 15.9 0.2 16.6 2.1

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 48.0 12.6 11.0
Less than 50 miles 9.2 6.0 19.9 5.5 20.1 2.5
50 to 99 miles 16.1 3.1 18.6 2.1 20.4 1.5
100 to 249 miles 21.3 2.6 25.1 2.9 22.8 2.7
250 to 499 miles 16.2 1.3 21.2 0.7 20.2 1.1
500 to 749 miles 29.4 2.2 31.1 0.8 30.3 2.0
750 to 999 miles S S 16.6 0.3 16.7 0.7
1,000 to 1,499 miles 17.8 1.4 12.5 0.2 12.4 1.1
1,500 to 1,999 miles S S 35.9 0.4 35.8 3.4
2,000 miles or more S S 16.6 0.2 17.2 2.2

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 S S S S S S
100 to 249 miles S S 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

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 S S S S S S
Less than 50 miles
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 S S S S
500 to 749 miles S S S S S S
750 to 999 miles S S 45.3 7.3 44.9 7.0
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

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 44.4 15.4 22.4
Less than 50 miles 25.3 2.4 39.9 2.2 39.6 0.2
50 to 99 miles 29.5 2.6 33.2 3.0 32.8 0.7
100 to 249 miles S S 15.5 3.6 13.0 1.4
250 to 499 miles 40.7 2.0 20.0 1.6 18.5 0.9
500 to 749 miles 45.1 1.8 35.9 4.3 31.8 3.5
750 to 999 miles S S 28.8 1.9 28.7 1.5
1,000 to 1,499 miles 30.5 3.0 32.8 3.4 32.2 4.6
1,500 to 1,999 miles S S 34.2 1.2 35.1 1.8
2,000 miles or more 40.0 2.1 35.4 2.1 34.5 4.0

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 44.5 16.9 24.7
Less than 50 miles 25.3 2.4 39.9 2.2 39.6 0.2
50 to 99 miles 29.5 2.7 33.2 3.1 32.8 0.7
100 to 249 miles S S 16.3 2.9 13.8 1.3
250 to 499 miles 40.7 2.0 20.0 2.1 18.5 1.1
500 to 749 miles 45.2 1.8 22.9 2.4 23.2 2.1
750 to 999 miles S S 30.0 2.1 30.0 1.8
1,000 to 1,499 miles 30.5 2.9 32.8 3.3 32.2 4.2
1,500 to 1,999 miles S S 34.2 1.3 35.1 2.1
2,000 miles or more 40.1 2.1 41.5 1.8 40.6 3.3

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 30.7 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
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
1,500 to 1,999 miles
2,000 miles or more 48.9 13.6 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 40.6 29.3 S S
Less than 50 miles 37.4 13.9 44.4 13.3 41.6 11.3
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 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.