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 14.3 23.1 10.2
Less than 50 miles 15.2 4.1 32.7 9.0 36.4 3.3
50 to 99 miles 23.4 2.7 27.2 2.1 26.3 0.7
100 to 249 miles 6.4 2.2 14.5 5.2 14.1 2.2
250 to 499 miles 49.4 2.2 22.9 0.9 21.9 1.1
500 to 749 miles 17.3 0.6 8.5 0.7 8.6 0.9
750 to 999 miles 19.7 0.5 25.0 0.7 24.6 1.5
1,000 to 1,499 miles 43.9 0.8 15.7 0.6 15.1 1.5
1,500 to 1,999 miles 31.3 1.1 12.0 0.5 11.8 1.0
2,000 miles or more 24.8 1.4 18.5 0.8 18.6 2.8

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 15.6 23.6 8.9
Less than 50 miles 16.6 4.8 33.2 9.3 36.6 4.0
50 to 99 miles 24.3 2.8 27.9 2.1 27.0 1.1
100 to 249 miles 7.4 2.3 16.1 5.6 15.5 2.4
250 to 499 miles S S 24.4 1.0 23.8 1.5
500 to 749 miles 17.5 0.6 9.0 0.8 9.1 1.0
750 to 999 miles 22.3 0.6 25.6 0.7 25.2 1.6
1,000 to 1,499 miles S S 19.6 0.6 18.8 1.5
1,500 to 1,999 miles 38.8 1.0 12.4 0.5 12.3 1.0
2,000 miles or more 30.6 1.4 17.0 0.7 18.0 2.7

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 15.9 24.2 6.3
Less than 50 miles 16.8 4.8 33.7 9.7 36.9 5.2
50 to 99 miles 24.2 3.1 28.9 2.4 28.4 1.3
100 to 249 miles 7.5 2.4 16.6 5.8 15.9 2.5
250 to 499 miles S S 28.3 1.0 26.8 2.0
500 to 749 miles 18.6 0.7 9.2 0.8 9.2 0.9
750 to 999 miles 19.9 0.6 26.8 0.8 26.7 1.7
1,000 to 1,499 miles S S 27.1 0.6 26.2 1.9
1,500 to 1,999 miles 43.8 0.9 12.4 0.4 12.2 0.9
2,000 miles or more 35.6 1.2 13.5 0.6 13.8 2.6

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 30.9 24.2 26.7
Less than 50 miles S S 44.8 0.3 45.4
50 to 99 miles 41.5 5.5 46.8 7.7 49.5 1.9
100 to 249 miles 42.1 0.4 41.7 1.5 47.2 0.2
250 to 499 miles S S S S S S
500 to 749 miles 41.4 0.7 23.7 1.7 21.1 1.0
750 to 999 miles 48.5 0.7 27.4 0.6 27.0 0.4
1,000 to 1,499 miles 35.8 2.6 33.9 3.0 33.5 2.6
1,500 to 1,999 miles 35.3 3.7 19.3 3.1 19.2 4.7
2,000 miles or more 31.6 4.7 35.4 5.4 35.9 7.0

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 45.5 49.8 S S
Less than 50 miles 46.5 12.0 S S S S
50 to 99 miles S S S S S S
100 to 249 miles 28.6 4.2 S S 49.4 8.7
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 49.8 4.0 S S S S
1,500 to 1,999 miles S S 47.2 5.7 47.5 10.9
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 15.0 29.8 30.6
Less than 50 miles 30.1 2.1 S S S S
50 to 99 miles 31.9 1.3 44.3 3.1 47.8 0.3
100 to 249 miles 31.5 5.6 S S S S
250 to 499 miles 29.1 2.6 49.4 3.7 49.2 2.0
500 to 749 miles 25.4 1.1 S S S S
750 to 999 miles 35.8 0.9 36.3 0.5 36.5 0.3
1,000 to 1,499 miles 36.7 1.9 49.7 2.5 S S
1,500 to 1,999 miles 27.2 2.5 15.7 7.3 14.9 6.5
2,000 miles or more 14.9 3.2 S S 48.7 7.7

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 22.2 31.3
Less than 50 miles 32.0 3.2 45.1 1.6 S S
50 to 99 miles 33.0 2.2 39.1 4.5 35.4 0.5
100 to 249 miles 35.7 6.3 29.5 6.1 27.9 2.7
250 to 499 miles 31.7 3.8 39.8 6.7 37.8 3.6
500 to 749 miles 27.3 1.7 34.3 1.7 35.6 1.4
750 to 999 miles 35.9 1.1 46.1 2.4 46.4 2.9
1,000 to 1,499 miles 44.4 2.3 47.2 1.6 48.7 2.0
1,500 to 1,999 miles 28.2 1.7 36.0 1.8 36.1 2.6
2,000 miles or more 29.6 3.3 36.5 3.4 36.3 4.5

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 12.5 31.2 31.6
Less than 50 miles S S S S S S
50 to 99 miles 44.8 0.3 45.7 3.4 49.0 0.3
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 46.2 0.4 42.9 0.5 43.7 0.3
1,000 to 1,499 miles 38.2 1.7 S S S S
1,500 to 1,999 miles 38.4 8.2 16.5 9.2 15.7 7.8
2,000 miles or more 19.4 7.6 S S 49.9 8.2

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 22.3 43.7 24.3
Less than 50 miles 37.5 10.5 S S 36.5 1.8
50 to 99 miles 38.4 3.6 S S S S
100 to 249 miles 44.4 6.9 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 49.3 0.2 S S S S
1,000 to 1,499 miles 43.9 0.5 S S S S
1,500 to 1,999 miles S S 43.6 3.5 44.0 9.5
2,000 miles or more 38.5 1.1 37.1 1.8 36.7 9.9

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.