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 10.7 15.6 25.6
Less than 50 miles 23.6 5.2 24.4 6.8 20.6 2.5
50 to 99 miles 24.7 1.9 32.2 7.3 31.6 6.8
100 to 249 miles 20.0 2.6 39.1 5.4 44.0 8.1
250 to 499 miles 34.5 2.4 25.3 0.5 26.7 1.0
500 to 749 miles 19.4 0.6 S S S S
750 to 999 miles 27.9 3.1 S S S S
1,000 to 1,499 miles 49.2 6.6 30.2 0.7 29.0 4.7
1,500 to 1,999 miles 27.5 2.0 28.4 0.3 29.3 4.0
2,000 miles or more 48.2 3.3 35.5 0.1 36.2 1.8

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 13.0 15.7 25.7
Less than 50 miles 25.5 5.2 24.5 6.9 20.7 2.5
50 to 99 miles 29.8 2.1 32.2 7.3 31.6 7.1
100 to 249 miles 25.3 3.4 39.3 5.4 44.2 8.6
250 to 499 miles 38.0 2.4 25.8 0.4 27.4 0.9
500 to 749 miles 22.1 0.7 S S S S
750 to 999 miles 31.2 3.5 S S S S
1,000 to 1,499 miles S S 33.3 0.7 32.1 4.8
1,500 to 1,999 miles 29.3 2.1 31.9 0.3 33.1 4.1
2,000 miles or more S S 34.7 0.1 34.8 1.7

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 15.7 18.8 31.8
Less than 50 miles 22.6 6.6 15.7 7.4 22.5 1.6
50 to 99 miles 31.1 2.6 35.4 8.1 36.3 8.2
100 to 249 miles 22.3 2.0 29.7 2.8 29.2 3.7
250 to 499 miles 46.3 2.6 26.4 0.6 28.2 2.4
500 to 749 miles 25.1 0.9 S S S S
750 to 999 miles 36.6 3.8 S S S S
1,000 to 1,499 miles S S 33.3 0.7 32.3 5.0
1,500 to 1,999 miles 33.3 2.0 25.4 0.3 25.3 2.7
2,000 miles or more S S 36.1 0.1 36.2 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 40.8 S S 47.6
Less than 50 miles S S S S S S
50 to 99 miles 44.1 12.7 44.1 13.1 44.1 12.6
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 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 20.4 S S S S
Less than 50 miles S S S S S S
50 to 99 miles
100 to 249 miles S S S S S S
250 to 499 miles 27.9 4.4 S S S S
500 to 749 miles S S 43.3 0.7 37.3 0.7
750 to 999 miles S S S S S S
1,000 to 1,499 miles 23.9 2.0 45.1 5.5 44.0 5.8
1,500 to 1,999 miles 25.5 6.3 S S S S
2,000 miles or more 29.7 5.3 34.2 3.9 41.0 4.3

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 17.7 39.3 41.8
Less than 50 miles S S 43.0 7.7 S S
50 to 99 miles 26.8 5.0 S S S S
100 to 249 miles 42.0 9.3 S S S S
250 to 499 miles 25.3 7.5 S S S S
500 to 749 miles 34.6 1.3 S S 46.3 2.4
750 to 999 miles 36.2 2.3 43.7 1.0 45.3 1.1
1,000 to 1,499 miles 26.0 2.7 48.5 3.4 48.4 3.6
1,500 to 1,999 miles 35.4 3.4 48.0 3.6 48.9 4.3
2,000 miles or more S S 46.1 1.0 47.0 3.2

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 17.9 39.3 41.8
Less than 50 miles S S 43.0 7.7 S S
50 to 99 miles 28.2 5.0 S S S S
100 to 249 miles 42.0 9.3 S S S S
250 to 499 miles 25.3 7.5 S S S S
500 to 749 miles 34.6 1.3 S S 46.3 2.4
750 to 999 miles 36.2 2.3 43.7 1.0 45.3 1.1
1,000 to 1,499 miles 26.0 2.7 48.5 3.4 48.4 3.6
1,500 to 1,999 miles 35.4 3.5 48.0 3.6 48.9 4.3
2,000 miles or more S S 46.1 1.0 47.0 3.2

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
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 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

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.