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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

Monday, July 2, 2012

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 19.4 – 42.8 – 14.5 –
Less than 50 miles 32.2 4.8 S S 39.3 4.5
50 to 99 miles 37.4 2.9 19.0 4.0 17.8 2.9
100 to 249 miles 24.3 1.8 26.4 2.9 24.7 3.6
250 to 499 miles 21.0 1.6 22.5 2.7 22.5 3.0
500 to 749 miles 29.5 1.5 33.9 1.9 34.1 4.0
750 to 999 miles 35.2 0.9 26.3 0.6 27.5 1.6
1,000 to 1,499 miles 27.2 1.1 28.7 0.3 28.6 1.1
1,500 to 1,999 miles 32.6 0.6 30.0 – 29.6 0.2
2,000 miles or more 18.2 0.9 35.5 0.6 36.3 3.0

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 22.3 – 43.4 – 15.4 –
Less than 50 miles 36.1 4.6 S S 39.9 4.6
50 to 99 miles 39.9 3.3 19.1 4.1 17.8 3.0
100 to 249 miles 26.0 1.9 26.6 3.0 24.9 3.6
250 to 499 miles 22.8 1.7 22.7 2.8 22.7 3.1
500 to 749 miles 31.1 1.8 34.1 2.0 34.2 4.1
750 to 999 miles 41.0 1.0 31.2 0.6 32.4 1.7
1,000 to 1,499 miles 23.6 0.6 29.3 0.3 29.2 1.3
1,500 to 1,999 miles 25.8 0.3 36.1 – 35.9 0.2
2,000 miles or more 22.0 0.7 41.3 0.6 42.5 3.3

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 23.3 – 46.0 – 16.6 –
Less than 50 miles 36.1 4.5 S S 40.8 4.7
50 to 99 miles 40.9 3.4 22.1 4.2 21.5 3.1
100 to 249 miles 26.9 1.7 30.2 2.6 27.9 3.3
250 to 499 miles 22.8 1.9 22.8 3.6 22.7 4.4
500 to 749 miles 36.5 1.9 30.5 1.1 30.9 1.8
750 to 999 miles 45.8 1.0 34.8 0.3 34.2 0.8
1,000 to 1,499 miles 24.0 0.6 36.8 0.3 36.9 1.1
1,500 to 1,999 miles 31.1 0.3 36.5 – 36.3 0.3
2,000 miles or more 26.2 0.5 38.8 0.2 39.0 1.7

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 29.9 – 46.1 – 41.5 –
Less than 50 miles – – – – – –
50 to 99 miles 49.5 4.5 S S 49.8 1.0
100 to 249 miles S S S S S S
250 to 499 miles S S 49.3 4.2 46.9 6.9
500 to 749 miles 42.3 7.0 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 – – – – – –
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 42.5 – 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 S S 44.1 4.5 36.5 1.7
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 37.3 2.9 36.2 3.7
1,000 to 1,499 miles S S S S S S
1,500 to 1,999 miles S S 39.1 1.5 37.7 2.1
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 15.1 – 15.0 – 20.9 –
Less than 50 miles 41.5 6.0 25.8 5.5 28.6 0.5
50 to 99 miles 32.2 1.6 33.1 1.6 32.8 0.3
100 to 249 miles 26.9 2.1 29.0 2.9 35.6 1.7
250 to 499 miles 17.8 2.3 36.6 7.7 S S
500 to 749 miles 34.1 3.0 28.3 2.0 29.4 2.3
750 to 999 miles 22.0 2.1 37.2 7.4 38.2 8.7
1,000 to 1,499 miles S S 18.9 0.4 18.2 0.9
1,500 to 1,999 miles S S S S S S
2,000 miles or more 25.2 5.8 39.3 6.0 38.7 10.2

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 16.2 – 30.6 – 44.5 –
Less than 50 miles 41.9 6.4 26.2 6.5 29.3 1.4
50 to 99 miles 32.4 1.6 35.4 1.5 35.2 0.5
100 to 249 miles 29.1 2.0 34.7 3.0 36.3 2.4
250 to 499 miles 17.8 2.4 39.1 2.5 39.9 1.2
500 to 749 miles 35.0 3.0 35.1 1.4 35.5 2.0
750 to 999 miles 22.4 1.6 22.9 2.1 23.1 3.5
1,000 to 1,499 miles S S 20.0 2.0 19.5 3.3
1,500 to 1,999 miles S S S S S S
2,000 miles or more 26.8 5.8 S S S S

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 38.5 – 28.5 – 32.3 –
Less than 50 miles S S 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 S S S S S S
500 to 749 miles S S S S S S
750 to 999 miles S S 46.7 12.4 47.4 13.2
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 47.5 12.5 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 25.0 – 31.8 – S S
Less than 50 miles 27.5 10.5 33.3 10.8 S S
50 to 99 miles S S S S S S
100 to 249 miles 42.3 8.4 36.3 10.1 34.4 8.4
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 – – – – – –
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.