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 7.4 12.2 21.1
Less than 50 miles 14.5 3.4 23.2 7.1 20.9 1.7
50 to 99 miles 21.1 1.8 20.1 1.1 21.6 1.1
100 to 249 miles 10.6 1.4 26.8 4.5 29.5 3.8
250 to 499 miles 12.0 1.7 40.4 4.2 43.6 4.8
500 to 749 miles 18.0 2.4 29.5 4.6 34.1 8.6
750 to 999 miles 20.9 1.1 22.3 0.4 22.0 1.3
1,000 to 1,499 miles 18.0 0.4 19.1 0.2 19.0 1.1
1,500 to 1,999 miles 21.5 1.1 28.0 0.3 27.4 2.0
2,000 miles or more 29.3 0.4 44.1 42.7 0.4

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 10.1 12.6 21.8
Less than 50 miles 15.0 3.3 23.2 7.1 20.9 1.8
50 to 99 miles 23.1 2.0 20.2 1.1 21.7 1.2
100 to 249 miles 12.4 1.5 26.9 4.5 29.6 4.0
250 to 499 miles 13.4 1.8 40.9 4.2 44.2 4.9
500 to 749 miles 23.6 1.9 29.0 4.3 33.7 8.7
750 to 999 miles 27.8 1.1 23.0 0.4 22.7 1.3
1,000 to 1,499 miles 22.2 0.6 19.6 0.2 19.6 1.2
1,500 to 1,999 miles 26.0 1.0 31.7 0.3 31.2 1.5
2,000 miles or more 40.0 0.6 47.7 46.2 0.3

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 10.5 14.3 26.4
Less than 50 miles 15.0 3.5 24.7 6.8 21.0 2.1
50 to 99 miles 23.1 2.2 20.2 2.1 21.7 1.8
100 to 249 miles 14.4 1.6 22.8 3.9 21.6 4.8
250 to 499 miles 13.5 2.0 39.7 3.2 40.9 2.5
500 to 749 miles 26.8 2.2 41.3 1.6 41.2 2.7
750 to 999 miles 29.5 1.1 25.0 0.6 24.9 1.5
1,000 to 1,499 miles 22.6 0.7 18.7 0.1 17.9 0.6
1,500 to 1,999 miles 29.3 1.1 38.3 0.5 38.6 3.1
2,000 miles or more 46.5 0.5 49.7 49.7 0.6

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 36.3 S S S S
Less than 50 miles
50 to 99 miles
100 to 249 miles 42.3 12.3 S S S S
250 to 499 miles S S S S S S
500 to 749 miles S S 49.5 5.1 46.5 4.0
750 to 999 miles 42.7 9.5 47.2 7.3 47.5 6.6
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 43.3 4.1 45.7 2.3 45.8 7.6
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 32.0 48.3 48.0
Less than 50 miles S S S S S S
50 to 99 miles S S S S S S
100 to 249 miles 40.8 6.9 S S S S
250 to 499 miles 30.9 5.4 44.5 10.7 38.0 6.5
500 to 749 miles 35.7 8.1 48.2 15.0 48.1 19.2
750 to 999 miles 44.7 4.8 S S S S
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles 49.1 4.9 47.9 3.5 48.5 6.6
2,000 miles or more S S 47.3 2.1 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 22.7 19.8 16.8
Less than 50 miles 33.2 1.3 31.6 1.7 29.4
50 to 99 miles 46.4 1.8 24.1 1.2 23.4 0.2
100 to 249 miles 21.8 1.5 43.7 1.8 43.1 0.7
250 to 499 miles 21.8 2.0 19.3 2.7 19.8 1.8
500 to 749 miles 36.9 4.4 24.7 3.0 24.8 3.1
750 to 999 miles 43.7 2.7 29.3 4.1 28.5 5.4
1,000 to 1,499 miles 39.1 0.9 34.7 0.6 34.5 1.1
1,500 to 1,999 miles 24.8 3.5 25.4 5.9 25.6 7.5
2,000 miles or more 35.2 0.6 32.9 0.7 31.9 1.9

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 23.0 25.4 23.9
Less than 50 miles 33.2 1.3 31.6 1.7 29.4
50 to 99 miles 46.4 1.8 24.1 1.2 23.4 0.2
100 to 249 miles 21.9 1.6 43.7 2.5 43.1 0.8
250 to 499 miles 22.4 2.2 22.8 2.5 22.8 1.7
500 to 749 miles 36.9 4.4 24.3 2.1 23.7 2.5
750 to 999 miles 44.4 2.6 35.3 1.2 34.4 1.6
1,000 to 1,499 miles 39.1 0.9 34.7 0.6 34.5 1.1
1,500 to 1,999 miles 26.7 2.7 24.7 1.9 25.2 4.1
2,000 miles or more 35.2 0.6 32.9 0.7 31.9 2.1

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 43.1 36.1 42.2
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 S S S S S S
750 to 999 miles S S S S S S
1,000 to 1,499 miles
1,500 to 1,999 miles S S S S S S
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 29.8 32.8 S S
Less than 50 miles 39.3 14.7 32.0 11.6 27.7 10.0
50 to 99 miles S S S S S S
100 to 249 miles 47.3 0.7 S S S S
250 to 499 miles S S S S S S
500 to 749 miles 46.4 10.6 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 49.9 1.8 S S
2,000 miles or more

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.