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 7.7 23.9 42.0
Less than 50 miles 10.7 1.9 12.4 6.2 12.8 1.4
50 to 99 miles 10.9 1.4 32.8 1.6 31.5 1.5
100 to 249 miles 14.3 3.9 29.6 2.4 28.5 3.9
250 to 499 miles 19.3 1.9 S S S S
500 to 749 miles 19.4 1.6 40.0 1.3 42.4 2.5
750 to 999 miles 25.7 0.8 39.8 0.3 39.6 1.1
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S 49.4 0.5 48.9 4.5
2,000 miles or more S S 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 10.5 26.9 42.6
Less than 50 miles 12.8 2.6 11.0 5.4 15.1 1.3
50 to 99 miles 12.3 1.3 32.8 1.5 31.5 1.5
100 to 249 miles 19.1 4.6 30.2 2.1 29.1 4.1
250 to 499 miles 20.3 2.1 S S S S
500 to 749 miles 23.9 1.4 40.4 1.4 42.9 2.6
750 to 999 miles 31.5 0.6 40.2 0.3 39.9 1.1
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S 49.5 0.6 48.9 4.5
2,000 miles or more S S 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 9.5 22.3 39.1
Less than 50 miles 13.0 2.7 13.7 4.2 16.7 1.0
50 to 99 miles 12.0 1.3 32.5 2.4 31.0 1.3
100 to 249 miles 19.6 4.6 29.9 2.1 29.2 4.4
250 to 499 miles 19.0 2.1 28.6 1.1 28.5 2.6
500 to 749 miles 17.9 1.1 26.4 1.2 27.0 3.3
750 to 999 miles 32.1 0.7 45.8 0.3 45.9 1.7
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

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 46.0 49.3 S S
Less than 50 miles 48.0 8.2 48.5 8.9 S S
50 to 99 miles 45.9 10.0 S S S S
100 to 249 miles S S 48.0 10.6 46.9 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 42.4 1.1 43.1 0.7 43.5 2.0
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

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 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
1,500 to 1,999 miles
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 32.6 S S S S
Less than 50 miles 46.5 1.0 33.4 1.3 33.1 0.1
50 to 99 miles 45.9 4.6 24.5 5.1 24.8 2.2
100 to 249 miles 33.7 5.7 S S S S
250 to 499 miles 36.4 2.7 38.0 4.4 41.3 2.8
500 to 749 miles 42.4 5.2 S S S S
750 to 999 miles 41.2 2.3 S S S S
1,000 to 1,499 miles 38.7 0.9 S S S S
1,500 to 1,999 miles 43.8 1.3 41.0 1.5 41.4 3.5
2,000 miles or more S S 39.4 1.0 46.1 3.4

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 32.8 31.0 42.8
Less than 50 miles 46.5 1.0 33.4 1.0 33.1 0.1
50 to 99 miles 45.9 4.6 24.5 4.3 24.8 2.1
100 to 249 miles 34.1 5.7 31.5 7.1 32.8 8.5
250 to 499 miles 36.4 2.7 38.0 2.9 41.3 1.8
500 to 749 miles 42.4 5.3 S S S S
750 to 999 miles 41.2 2.3 S S S S
1,000 to 1,499 miles 38.7 0.9 S S S S
1,500 to 1,999 miles 43.8 1.3 41.0 1.4 41.4 3.3
2,000 miles or more S S 39.4 0.9 46.1 3.1

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 S S S S S S
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

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 32.5 49.2 33.2
Less than 50 miles 37.4 10.8 S S S S
50 to 99 miles 45.0 6.1 47.2 6.6 46.4 4.4
100 to 249 miles S S S S S S
250 to 499 miles 45.5 7.3 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
2,000 miles or more

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.