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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 10.4 – 21.7 – 33.5 –
Less than 50 miles 9.4 3.7 30.3 7.5 28.9 2.1
50 to 99 miles S S S S S S
100 to 249 miles 11.8 1.3 S S S S
250 to 499 miles 23.9 2.2 37.9 2.7 40.3 4.9
500 to 749 miles 17.5 0.3 S S S S
750 to 999 miles 23.7 0.4 27.3 0.2 27.1 3.2
1,000 to 1,499 miles 15.9 0.8 S S 48.3 5.1
1,500 to 1,999 miles 29.0 1.9 28.9 0.6 28.8 3.8
2,000 miles or more 23.5 0.8 30.7 0.3 31.3 2.4

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 11.1 – 21.8 – 33.9 –
Less than 50 miles 9.8 3.6 30.6 7.5 29.2 2.1
50 to 99 miles S S S S S S
100 to 249 miles 14.1 1.4 S S S S
250 to 499 miles 27.5 2.6 37.6 2.7 40.0 4.9
500 to 749 miles 13.4 0.3 S S S S
750 to 999 miles 17.8 0.2 28.4 0.3 28.2 3.3
1,000 to 1,499 miles 14.8 0.9 S S 49.2 5.1
1,500 to 1,999 miles 32.2 1.7 30.4 0.6 30.2 3.8
2,000 miles or more 29.1 0.9 32.1 0.3 32.6 2.4

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 11.8 – 21.7 – 25.8 –
Less than 50 miles 9.8 3.7 30.6 7.3 29.2 2.9
50 to 99 miles S S S S S S
100 to 249 miles 15.6 1.5 S S S S
250 to 499 miles 28.4 2.6 43.5 2.1 47.1 4.6
500 to 749 miles 16.6 0.3 35.1 0.3 29.7 1.1
750 to 999 miles 18.8 0.2 29.5 0.3 29.5 3.2
1,000 to 1,499 miles 18.9 0.9 S S S S
1,500 to 1,999 miles 34.5 1.8 30.8 0.6 30.7 4.0
2,000 miles or more 30.0 1.0 30.0 0.3 30.4 2.5

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances S S S S S S
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles S S 45.3 5.0 45.9 2.9
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 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

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 39.1 – 41.9 – 48.7 –
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles S S 38.0 14.4 36.5 11.7
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 S S S S S S
1,500 to 1,999 miles S S S S S S
2,000 miles or more 45.5 10.0 47.5 10.1 46.4 12.1

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 36.1 – 44.6 – 41.5 –
Less than 50 miles S S S S S S
50 to 99 miles S S 42.0 0.6 41.3 –
100 to 249 miles 25.1 8.8 32.8 9.9 32.6 4.3
250 to 499 miles 44.0 3.6 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 37.7 3.0 49.9 3.1 49.2 4.0
1,500 to 1,999 miles 43.9 5.3 S S S S
2,000 miles or more 31.2 3.6 42.1 2.5 41.5 5.2

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 36.2 – 46.1 – 49.0 –
Less than 50 miles S S S S 48.2 –
50 to 99 miles S S 42.0 0.7 41.3 0.1
100 to 249 miles 25.1 8.8 32.8 8.4 32.6 4.3
250 to 499 miles 45.1 3.6 47.7 4.5 46.8 3.1
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 37.7 3.0 49.9 2.8 49.2 3.9
1,500 to 1,999 miles 43.9 5.4 S S S S
2,000 miles or more 31.3 3.6 43.3 3.6 42.9 6.3

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 – – – – – –
100 to 249 miles – – – – – –
250 to 499 miles S S S S S S
500 to 749 miles – – – – – –
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 23.0 – S S 45.0 –
Less than 50 miles 24.1 7.4 S S S S
50 to 99 miles S S S S S S
100 to 249 miles S S 47.8 10.0 48.9 14.6
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 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.