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 17.1 7.1 14.1
Less than 50 miles 9.6 2.1 10.3 3.8 17.6 2.0
50 to 99 miles 10.5 0.9 12.8 1.1 16.8 1.3
100 to 249 miles 9.3 1.5 24.0 1.8 26.2 2.5
250 to 499 miles 12.6 1.4 11.8 0.5 11.4 1.9
500 to 749 miles S S 28.2 1.5 28.4 2.6
750 to 999 miles 18.5 0.7 26.7 0.4 27.0 1.2
1,000 to 1,499 miles 17.1 1.2 21.3 0.7 30.9 3.7
1,500 to 1,999 miles 16.8 0.5 37.7 0.3 34.4 1.6
2,000 miles or more 47.1 2.0 22.4 0.5 22.9 2.9

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 21.5 7.8 11.4
Less than 50 miles 11.2 3.0 10.9 4.1 18.0 2.1
50 to 99 miles 13.3 1.1 12.9 1.1 17.0 1.3
100 to 249 miles 9.1 1.8 24.7 1.8 26.9 2.5
250 to 499 miles 17.2 1.6 11.9 0.5 11.5 1.7
500 to 749 miles S S 30.0 1.7 30.2 2.6
750 to 999 miles 24.6 0.9 27.3 0.4 27.6 1.3
1,000 to 1,499 miles 20.9 1.3 20.0 0.6 20.8 2.6
1,500 to 1,999 miles 19.6 0.3 44.4 0.4 42.0 2.9
2,000 miles or more S S 24.2 0.4 23.7 3.2

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 21.8 11.3 13.7
Less than 50 miles 11.0 3.1 14.1 3.9 19.8 2.1
50 to 99 miles 12.7 1.2 16.7 1.2 17.7 0.4
100 to 249 miles 7.7 1.7 16.5 0.8 20.0 0.9
250 to 499 miles 17.9 1.7 13.3 0.5 13.8 1.4
500 to 749 miles S S 11.2 0.6 12.2 1.4
750 to 999 miles 25.7 0.9 27.3 0.5 27.7 1.6
1,000 to 1,499 miles 22.6 1.4 22.6 0.8 23.3 2.3
1,500 to 1,999 miles 19.1 0.2 47.4 0.3 46.1 1.9
2,000 miles or more S S 23.5 0.4 22.7 3.5

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 35.5 39.3 46.6
Less than 50 miles 45.9 6.3 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 29.5 8.6 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 38.4 4.8 33.2 5.1 33.9 7.7
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 24.2 33.2 32.9
Less than 50 miles 26.8 5.9 39.6 9.4 S S
50 to 99 miles 40.2 4.8 35.2 5.2 41.6 6.6
100 to 249 miles 39.7 3.6 44.4 6.6 48.1 10.9
250 to 499 miles 49.7 0.9 S S S S
500 to 749 miles 36.6 2.0 S S S S
750 to 999 miles 40.7 1.4 39.6 40.7
1,000 to 1,499 miles 32.6 2.0 S S S S
1,500 to 1,999 miles 46.9 2.6 S S S S
2,000 miles or more 27.1 5.5 46.1 43.3 2.4

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 19.6 38.9 S S
Less than 50 miles 30.7 2.1 48.0 4.2 S S
50 to 99 miles 11.6 0.8 23.4 2.0 26.7 0.2
100 to 249 miles 14.9 1.4 11.0 2.1 10.9 0.6
250 to 499 miles 16.7 1.6 20.8 1.3 18.9 0.8
500 to 749 miles 30.2 3.1 26.9 2.7 28.1 2.6
750 to 999 miles 27.3 1.2 21.1 1.6 20.7 2.1
1,000 to 1,499 miles 31.6 2.1 S S S S
1,500 to 1,999 miles 29.0 2.1 S S S S
2,000 miles or more 20.7 1.6 26.2 2.9 27.7 10.1

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 19.8 14.8 12.1
Less than 50 miles 31.2 2.1 31.1 2.9 25.0 0.2
50 to 99 miles 11.6 0.8 23.4 1.6 26.7 0.3
100 to 249 miles 14.9 1.4 11.0 1.4 10.9 0.4
250 to 499 miles 16.7 1.8 20.8 0.7 18.9 0.7
500 to 749 miles 30.3 3.2 23.1 2.0 23.5 1.6
750 to 999 miles 27.3 1.3 22.3 1.2 21.8 1.3
1,000 to 1,499 miles 31.4 2.0 19.7 1.1 19.1 2.1
1,500 to 1,999 miles 31.1 2.0 16.9 0.5 16.7 1.2
2,000 miles or more 21.3 1.6 11.8 1.3 11.6 3.6

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 43.5 S S S S
Less than 50 miles S S S S S S
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 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 27.3 48.6 S S
Less than 50 miles 35.7 5.5 S S 49.0 3.0
50 to 99 miles 33.0 1.1 43.7 2.4 42.6 2.9
100 to 249 miles 35.9 1.3 S S S S
250 to 499 miles 37.6 3.2 S S S S
500 to 749 miles 42.9 1.9 S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles 35.8 1.6 49.6 4.3 S S
1,500 to 1,999 miles 34.1 3.0 S S S S
2,000 miles or more 48.2 3.4 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.