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 12.7 29.8 28.2
Less than 50 miles 13.3 3.7 23.1 6.2 20.7 1.1
50 to 99 miles 21.9 1.4 36.9 1.8 39.3 1.0
100 to 249 miles 14.8 1.8 S S S S
250 to 499 miles 21.3 2.3 22.2 2.6 24.0 2.7
500 to 749 miles 16.8 1.9 29.2 1.0 27.9 1.4
750 to 999 miles 27.5 2.3 33.6 1.0 32.9 2.2
1,000 to 1,499 miles 26.9 1.5 35.8 0.4 34.9 1.7
1,500 to 1,999 miles 48.2 1.0 36.4 0.3 37.0 2.0
2,000 miles or more 29.0 0.9 30.0 0.2 29.5 1.2

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 14.0 30.9 29.3
Less than 50 miles 13.7 5.0 23.3 6.3 20.7 1.2
50 to 99 miles 23.9 1.7 38.0 2.1 40.6 1.2
100 to 249 miles 16.4 1.6 S S S S
250 to 499 miles 22.9 2.8 23.7 2.9 25.1 3.0
500 to 749 miles 19.8 1.9 29.5 1.0 28.2 1.4
750 to 999 miles 30.1 2.5 34.0 1.1 33.3 2.3
1,000 to 1,499 miles 22.6 1.3 36.3 0.4 35.3 1.8
1,500 to 1,999 miles S S 36.7 0.3 37.2 2.1
2,000 miles or more 36.0 1.0 33.8 0.3 33.4 1.3

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 14.2 17.8 21.8
Less than 50 miles 13.7 5.0 23.3 6.2 20.7 1.4
50 to 99 miles 24.9 1.7 28.5 2.0 30.6 1.2
100 to 249 miles 17.6 1.7 27.6 3.7 27.3 2.3
250 to 499 miles 24.1 2.7 20.7 2.6 21.9 2.6
500 to 749 miles 18.5 2.1 31.0 1.1 29.8 2.0
750 to 999 miles 30.1 2.6 34.2 1.0 33.5 2.3
1,000 to 1,499 miles 22.6 1.3 37.9 0.4 37.2 1.9
1,500 to 1,999 miles S S 36.7 0.3 37.3 2.0
2,000 miles or more 37.3 0.8 36.5 0.2 36.5 1.5

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 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 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 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 S S S S S S
500 to 749 miles 35.5 14.2 43.8 13.7 46.1 14.2
750 to 999 miles S S S S S S
1,000 to 1,499 miles 49.7 14.7 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 33.4 27.7 21.2
Less than 50 miles S S S S 46.9
50 to 99 miles 41.6 1.7 48.7 1.4 48.0 0.2
100 to 249 miles 48.0 6.8 S S S S
250 to 499 miles 37.5 4.7 45.4 8.6 42.7 8.5
500 to 749 miles 46.4 4.7 36.4 5.4 37.4 4.6
750 to 999 miles 37.5 3.0 37.8 1.9 37.6 1.9
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 45.2 5.6 31.1 10.6 31.6 11.3

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 34.2 39.6 37.3
Less than 50 miles S S S S 46.9 0.2
50 to 99 miles 41.6 1.7 48.7 1.4 48.0 0.2
100 to 249 miles 48.0 6.5 S S S S
250 to 499 miles 38.4 2.8 S S S S
500 to 749 miles 47.2 5.1 43.1 6.6 44.7 6.1
750 to 999 miles 37.5 3.9 37.8 2.4 37.6 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 49.4 2.7 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 S S 47.4 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
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 43.5 36.2 42.7
Less than 50 miles S S 48.9 16.7 47.1 15.9
50 to 99 miles S S S S S S
100 to 249 miles 48.7 14.4 47.9 15.0 47.1 15.5
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
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.