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 15.1 25.3 11.2
Less than 50 miles 8.9 3.8 32.3 4.7 20.6 2.6
50 to 99 miles 13.6 1.6 16.1 2.4 16.4 1.2
100 to 249 miles 40.6 3.6 14.2 1.8 16.1 1.8
250 to 499 miles 38.2 1.1 20.1 0.5 19.6 1.1
500 to 749 miles 22.5 0.9 13.4 0.4 14.2 1.2
750 to 999 miles 14.2 0.9 27.2 0.5 28.7 2.9
1,000 to 1,499 miles 23.5 1.5 22.2 0.3 21.7 2.5
1,500 to 1,999 miles 29.8 0.8 22.4 0.1 23.3 1.1
2,000 miles or more 11.9 0.6 10.8 11.7 1.6

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 17.6 26.1 11.7
Less than 50 miles 9.7 5.0 33.1 4.9 21.5 2.9
50 to 99 miles 14.7 2.0 16.8 2.5 17.1 1.4
100 to 249 miles 46.7 4.3 15.0 1.9 17.0 1.9
250 to 499 miles S S 22.7 0.5 22.4 1.2
500 to 749 miles 28.9 0.9 14.5 0.5 15.4 1.4
750 to 999 miles 15.9 0.9 26.8 0.5 28.3 2.9
1,000 to 1,499 miles 29.2 1.6 23.8 0.4 23.2 2.7
1,500 to 1,999 miles 35.1 1.0 25.5 0.2 26.2 1.3
2,000 miles or more 20.8 0.7 11.7 12.6 1.5

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 17.8 26.3 11.8
Less than 50 miles 9.7 5.0 33.1 4.9 21.5 2.9
50 to 99 miles 14.3 2.0 16.8 2.5 17.1 1.5
100 to 249 miles 47.5 4.3 14.2 1.9 15.2 1.9
250 to 499 miles S S 19.7 0.4 20.0 1.0
500 to 749 miles 28.9 0.9 14.5 0.5 15.4 1.4
750 to 999 miles 16.2 1.0 26.8 0.5 28.4 3.0
1,000 to 1,499 miles 30.4 1.6 26.1 0.4 25.9 2.9
1,500 to 1,999 miles 38.2 0.8 25.7 0.2 26.4 1.3
2,000 miles or more 22.0 0.7 12.3 12.2 1.4

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 48.4 S S 38.1
Less than 50 miles
50 to 99 miles
100 to 249 miles S S S S S S
250 to 499 miles S S S S S S
500 to 749 miles
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 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 35.3 35.2 26.9
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 48.9 8.9 S S S S
250 to 499 miles S S S S S S
500 to 749 miles 29.8 4.5 S S 43.4 5.9
750 to 999 miles S S 48.9 2.6 49.0 2.6
1,000 to 1,499 miles S S 36.5 4.0 38.3 4.0
1,500 to 1,999 miles S S 47.4 4.4 49.1 6.1
2,000 miles or more 38.2 5.7 29.6 5.3 30.8 10.9

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 8.9 48.3 15.4
Less than 50 miles 17.6 1.6 S S S S
50 to 99 miles 25.2 3.1 35.4 3.2 31.3 1.2
100 to 249 miles 13.4 1.3 19.0 3.8 19.4 1.1
250 to 499 miles 18.3 2.1 26.0 2.5 24.7 1.6
500 to 749 miles 12.2 1.4 27.1 3.7 27.5 3.9
750 to 999 miles 13.8 1.6 42.2 2.8 42.8 3.2
1,000 to 1,499 miles 11.5 1.6 26.6 2.9 27.0 3.4
1,500 to 1,999 miles 16.8 0.3 22.4 0.6 22.3 1.2
2,000 miles or more 23.4 1.9 19.0 2.2 20.7 4.1

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 8.8 14.6 19.0
Less than 50 miles 17.1 1.5 20.6 1.5 26.2
50 to 99 miles 25.2 3.1 19.7 2.7 19.5 0.7
100 to 249 miles 13.4 1.3 19.0 2.6 19.4 1.2
250 to 499 miles 18.3 2.1 26.0 2.3 24.7 2.1
500 to 749 miles 12.3 1.4 18.9 1.5 19.5 1.5
750 to 999 miles 13.8 1.6 42.2 2.7 42.8 3.4
1,000 to 1,499 miles 11.5 1.7 26.6 2.2 27.0 3.0
1,500 to 1,999 miles 16.8 0.3 22.4 0.5 22.3 1.2
2,000 miles or more 23.9 1.9 16.4 0.7 15.6 2.9

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 S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles
250 to 499 miles
500 to 749 miles S S S S S S
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 30.6 29.8 22.6
Less than 50 miles 39.4 8.4 49.2 9.2 36.7 5.0
50 to 99 miles 37.6 3.5 49.4 2.1 S S
100 to 249 miles 43.4 8.8 23.8 7.3 23.4 10.0
250 to 499 miles 49.1 1.3 45.4 4.0 44.1 6.9
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.