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 10.4 16.8 24.8
Less than 50 miles 19.4 3.0 21.4 7.2 23.3 2.1
50 to 99 miles 17.9 1.4 24.6 2.1 24.3 2.4
100 to 249 miles 16.9 3.9 35.0 5.5 33.2 5.3
250 to 499 miles 13.9 1.5 37.2 1.8 38.3 3.3
500 to 749 miles 11.1 1.1 26.8 0.7 25.9 1.0
750 to 999 miles 19.2 0.7 25.9 0.4 25.8 1.5
1,000 to 1,499 miles 20.5 0.8 23.3 1.1 24.5 3.6
1,500 to 1,999 miles 28.2 0.6 S S S S
2,000 miles or more 19.5 0.7 20.9 0.2 20.5 1.9

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 10.6 17.7 25.5
Less than 50 miles 20.4 3.0 21.2 7.2 23.9 2.1
50 to 99 miles 16.1 1.4 25.7 2.0 25.3 2.4
100 to 249 miles 17.7 4.0 35.9 5.6 34.2 5.4
250 to 499 miles 14.2 1.7 37.3 1.8 38.4 3.3
500 to 749 miles 12.1 1.1 26.9 0.7 26.1 1.1
750 to 999 miles 20.5 0.7 26.1 0.4 25.9 1.5
1,000 to 1,499 miles 19.2 0.6 23.7 1.1 24.9 3.8
1,500 to 1,999 miles 30.1 0.6 S S S S
2,000 miles or more 26.8 0.7 23.2 0.1 22.9 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 10.8 16.7 21.6
Less than 50 miles 20.4 3.2 21.9 7.6 24.0 2.4
50 to 99 miles 16.1 1.4 25.2 2.1 23.6 2.4
100 to 249 miles 19.2 4.2 35.2 5.8 33.7 6.1
250 to 499 miles 14.1 1.7 37.0 1.8 38.5 3.1
500 to 749 miles 10.9 1.0 27.7 0.8 26.8 1.3
750 to 999 miles 23.1 0.7 26.1 0.4 26.0 1.5
1,000 to 1,499 miles 15.8 0.6 16.9 1.2 17.1 3.9
1,500 to 1,999 miles 28.3 0.5 21.7 21.7 0.3
2,000 miles or more 21.7 0.6 25.1 0.2 24.9 1.7

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 38.4 S S 49.4
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
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 49.3 36.4 36.8
Less than 50 miles 41.0 2.9 S S 41.4 11.0
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 43.9 11.1 40.0 13.2 43.6 10.0
750 to 999 miles S S 40.2 1.4 39.5 2.1
1,000 to 1,499 miles S S 37.8 2.6 37.2 1.9
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 35.7 39.9 36.9
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 47.2 7.5 S S 47.7 4.2
250 to 499 miles 28.7 3.9 34.4 2.5 34.9 1.8
500 to 749 miles 25.7 2.7 29.8 1.3 29.6 1.8
750 to 999 miles 30.0 1.1 38.7 1.0 39.3 0.9
1,000 to 1,499 miles 28.9 2.9 31.8 1.2 31.6 2.6
1,500 to 1,999 miles 37.7 2.5 49.3 4.3 49.1 7.3
2,000 miles or more 34.0 2.8 42.4 6.4 43.1 8.5

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 35.8 45.6 33.0
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 47.4 7.6 S S S S
250 to 499 miles 28.7 4.2 34.4 3.9 34.9 2.0
500 to 749 miles 25.7 2.8 29.8 1.6 29.6 1.5
750 to 999 miles 30.0 1.2 38.7 1.6 39.3 1.5
1,000 to 1,499 miles 28.9 3.0 31.8 2.0 31.6 2.6
1,500 to 1,999 miles 36.6 2.7 38.5 0.7 36.5 1.9
2,000 miles or more 36.7 2.9 36.9 2.5 37.1 5.0

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 46.2 43.5 47.2
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 S S S S S S
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 25.5 S S S S
Less than 50 miles 40.1 10.8 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.