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 12.1 13.6 11.7
Less than 50 miles 9.4 3.9 18.2 4.2 13.0 2.6
50 to 99 miles 12.2 1.1 17.1 2.0 18.4 1.5
100 to 249 miles 34.9 3.1 10.7 1.0 14.1 1.2
250 to 499 miles 10.7 0.7 16.5 0.6 16.5 1.3
500 to 749 miles 25.4 1.3 23.3 1.3 23.3 3.4
750 to 999 miles 18.1 0.7 34.2 0.3 34.7 2.5
1,000 to 1,499 miles 22.7 1.0 38.9 0.4 38.9 2.9
1,500 to 1,999 miles S S 33.9 0.1 34.3 1.4
2,000 miles or more 48.0 2.0 27.9 27.3 2.6

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 14.4 13.7 12.6
Less than 50 miles 10.8 5.1 18.3 4.3 13.2 3.2
50 to 99 miles 16.6 1.6 17.9 2.0 19.4 1.7
100 to 249 miles 41.9 4.1 10.6 1.0 14.4 1.4
250 to 499 miles 13.8 0.9 17.2 0.6 17.2 1.3
500 to 749 miles 32.2 1.5 25.5 1.3 25.7 3.7
750 to 999 miles 17.9 0.5 33.8 0.3 34.2 2.4
1,000 to 1,499 miles 16.3 0.7 41.0 0.5 41.0 2.9
1,500 to 1,999 miles S S 36.9 0.1 37.3 1.5
2,000 miles or more S S 30.4 0.1 30.1 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 15.1 12.6 13.3
Less than 50 miles 11.8 5.0 16.5 3.6 14.2 2.5
50 to 99 miles 16.6 1.7 19.6 1.8 21.3 1.3
100 to 249 miles 45.1 4.1 11.3 0.9 14.8 1.3
250 to 499 miles 14.4 0.9 15.6 0.4 15.4 1.3
500 to 749 miles 32.7 1.6 27.0 1.3 27.2 3.8
750 to 999 miles 20.1 0.6 31.7 0.2 31.8 2.4
1,000 to 1,499 miles 16.3 0.7 42.1 0.4 41.8 3.1
1,500 to 1,999 miles S S 26.7 26.7 0.7
2,000 miles or more S S 33.7 0.1 33.6 2.9

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 29.0 34.8 37.3
Less than 50 miles 49.3 3.0 36.9 6.4 42.9 0.6
50 to 99 miles S S S S S S
100 to 249 miles 36.0 4.6 34.9 2.7 33.3 0.8
250 to 499 miles 33.5 6.6 36.7 4.9 36.6 5.3
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 36.3 8.1 41.6 7.5 45.2 14.2
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 19.4 30.9 44.3
Less than 50 miles 32.3 13.9 32.5 18.0 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 45.7 0.7 38.2 0.3 39.0 0.4
1,500 to 1,999 miles S S S S S S
2,000 miles or more 39.7 12.4 S S 49.7 14.9

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 24.6 28.9 31.4
Less than 50 miles 29.9 3.0 23.3 2.1 23.7 0.2
50 to 99 miles 22.7 1.1 23.2 4.2 22.0 1.1
100 to 249 miles 30.0 2.3 36.5 2.6 33.7 1.3
250 to 499 miles 29.5 1.4 34.1 1.3 35.4 1.3
500 to 749 miles 33.4 3.0 47.5 5.4 47.7 5.6
750 to 999 miles 23.1 3.2 42.8 4.4 39.1 5.3
1,000 to 1,499 miles 42.5 1.8 29.6 0.9 30.1 1.4
1,500 to 1,999 miles 39.1 0.3 46.6 0.3 48.1 0.9
2,000 miles or more 28.3 1.4 34.4 2.1 33.6 5.5

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 24.8 30.2 34.8
Less than 50 miles 29.9 3.0 23.3 2.2 23.7 0.2
50 to 99 miles 22.7 1.1 23.2 4.4 22.0 1.1
100 to 249 miles 30.0 2.3 36.5 2.4 33.7 1.2
250 to 499 miles 29.5 1.5 34.1 1.7 35.4 1.2
500 to 749 miles 34.0 3.0 S S S S
750 to 999 miles 23.8 3.0 24.9 2.3 24.5 3.1
1,000 to 1,499 miles 42.5 1.8 26.1 1.2 26.1 1.9
1,500 to 1,999 miles 39.1 0.3 46.6 0.4 48.1 1.2
2,000 miles or more 28.5 1.4 35.8 1.8 34.8 5.2

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 36.2 39.9 36.5
Less than 50 miles
50 to 99 miles
100 to 249 miles
250 to 499 miles
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 32.6 15.9 S S 48.7 14.1

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 27.4 S S 31.1
Less than 50 miles 38.1 11.1 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 47.2 3.8 48.1 4.6
500 to 749 miles 46.7 2.5 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.