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 22.2 20.6 16.4
Less than 50 miles 37.6 8.1 30.9 6.1 S S
50 to 99 miles 35.9 3.0 24.8 2.5 22.1 3.7
100 to 249 miles 41.0 3.8 45.0 6.0 40.5 5.5
250 to 499 miles 20.4 3.4 16.6 1.7 17.9 2.1
500 to 749 miles 29.0 1.8 18.6 1.5 18.5 3.3
750 to 999 miles 28.0 1.2 34.0 0.7 33.6 2.2
1,000 to 1,499 miles 24.1 0.8 27.9 0.2 27.6 1.6
1,500 to 1,999 miles 28.8 S S S S
2,000 miles or more S S 38.6 0.3 39.7 3.6

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 24.5 20.9 14.4
Less than 50 miles 39.5 8.2 31.2 6.1 S S
50 to 99 miles 38.8 3.0 26.7 2.6 25.1 3.9
100 to 249 miles 43.6 4.0 45.2 6.0 40.7 5.6
250 to 499 miles 19.1 3.4 16.9 1.8 18.2 2.2
500 to 749 miles 19.4 1.0 18.9 1.6 18.7 3.5
750 to 999 miles 31.1 1.3 34.3 0.8 34.0 2.3
1,000 to 1,499 miles 28.4 0.8 28.1 0.2 27.9 1.6
1,500 to 1,999 miles 36.9 S S S S
2,000 miles or more 26.3 0.7 33.9 0.3 35.3 2.9

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 25.9 22.0 16.3
Less than 50 miles 39.6 8.1 31.8 6.5 S S
50 to 99 miles 40.6 2.9 31.3 2.8 29.8 4.2
100 to 249 miles 44.5 4.1 45.6 6.8 41.4 6.9
250 to 499 miles 21.4 3.5 15.4 2.0 15.4 2.9
500 to 749 miles 20.1 1.1 25.9 1.1 24.9 3.0
750 to 999 miles 26.9 1.1 23.8 0.4 24.8 1.5
1,000 to 1,499 miles 29.0 0.8 24.2 0.2 23.2 1.0
1,500 to 1,999 miles 42.4 S S S S
2,000 miles or more 34.5 0.6 27.6 0.3 27.2 2.8

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 26.4 24.1 25.0
Less than 50 miles 43.4 4.4 36.7 3.7 39.8 0.4
50 to 99 miles S S S S S S
100 to 249 miles 40.9 5.8 38.0 5.8 47.1 3.1
250 to 499 miles 40.1 9.1 37.6 5.2 39.1 7.2
500 to 749 miles 29.6 5.2 31.8 5.6 30.6 7.5
750 to 999 miles S S S S 49.3 3.9
1,000 to 1,499 miles S S S S 49.0 4.1
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 37.0 S S S S
Less than 50 miles S S S S S S
50 to 99 miles 46.5 10.9 S S S S
100 to 249 miles 39.5 9.6 S S S S
250 to 499 miles 37.1 6.8 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 49.5 7.6

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 43.3 S S S S
Less than 50 miles 40.7 4.4 37.7 7.1 47.0 1.2
50 to 99 miles 30.1 4.6 S S S S
100 to 249 miles 49.0 3.0 30.8 5.3 32.6 3.0
250 to 499 miles S S 38.0 5.7 38.3 6.7
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 40.2 0.6 S S S S
2,000 miles or more S S S S S S

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 S S 37.9 43.1
Less than 50 miles 40.7 4.7 37.7 6.3 47.0 1.2
50 to 99 miles 31.2 4.4 31.5 3.2 32.7 1.3
100 to 249 miles 49.0 2.8 30.8 4.3 32.6 3.4
250 to 499 miles S S 44.8 2.3 45.9 3.4
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 40.2 0.6 S S S S
2,000 miles or more 35.1 4.4 32.8 1.9 33.1 4.1

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 S S S S S S
100 to 249 miles
250 to 499 miles S S S S S S
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 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 35.4 S S S S
Less than 50 miles 44.9 12.6 45.8 12.8 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 49.0 0.9 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.