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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 15.1 – 22.3 – 29.7 –
Less than 50 miles 13.5 2.3 32.0 7.6 30.9 2.7
50 to 99 miles 22.4 0.4 18.9 0.9 18.9 0.3
100 to 249 miles 22.7 2.5 S S S S
250 to 499 miles 14.3 2.3 27.7 2.0 35.5 3.1
500 to 749 miles 26.9 1.7 39.1 1.5 42.9 3.7
750 to 999 miles 32.6 1.4 20.4 0.2 20.3 0.7
1,000 to 1,499 miles S S 28.4 0.8 29.5 3.6
1,500 to 1,999 miles 19.1 1.4 35.1 0.4 33.3 1.4
2,000 miles or more 20.7 2.6 13.5 0.2 14.6 2.3

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 11.6 – 24.3 – 31.3 –
Less than 50 miles 17.8 2.2 35.4 9.1 33.0 3.2
50 to 99 miles 32.5 0.6 19.7 1.7 19.9 0.4
100 to 249 miles 25.2 3.2 S S S S
250 to 499 miles 18.9 3.8 28.4 3.3 36.4 3.1
500 to 749 miles 31.4 2.1 39.7 1.5 43.5 3.8
750 to 999 miles S S 22.2 0.4 21.9 0.7
1,000 to 1,499 miles 43.8 2.1 29.8 1.0 31.0 3.9
1,500 to 1,999 miles 25.3 1.9 36.2 0.4 34.4 1.4
2,000 miles or more 31.3 3.5 18.0 0.2 19.2 1.6

Truck

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 12.8 – 25.3 – 19.3 –
Less than 50 miles 17.8 2.4 35.4 8.8 33.0 3.1
50 to 99 miles 32.5 0.6 19.7 1.9 19.9 0.5
100 to 249 miles 25.3 3.7 S S S S
250 to 499 miles 20.3 4.4 17.2 3.2 16.0 3.6
500 to 749 miles 32.9 2.4 31.9 1.5 35.3 4.3
750 to 999 miles S S 25.4 0.4 25.6 0.9
1,000 to 1,499 miles S S 19.4 0.2 18.4 0.8
1,500 to 1,999 miles 27.2 1.6 33.3 0.3 32.2 1.7
2,000 miles or more 43.6 2.6 15.0 0.2 14.5 1.5

Rail

Distance Shipped Value Tons Ton-miles
CV Std. error of percent CV Std. error of percent CV Std. error of percent
All distances 46.5 – S S S S
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 43.5 0.6 48.7 0.9 49.2 1.0
1,000 to 1,499 miles 45.6 9.4 42.2 7.8 42.7 10.5
1,500 to 1,999 miles S S 49.7 10.3 49.2 10.2
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 22.9 – 45.6 – S S
Less than 50 miles – – – – – –
50 to 99 miles – – – – – –
100 to 249 miles 45.6 1.2 S S S S
250 to 499 miles 38.0 10.1 39.0 3.8 42.0 3.7
500 to 749 miles 37.1 0.9 S S 44.8 3.5
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 48.7 8.1 S S S S
2,000 miles or more S S 48.5 6.2 47.8 7.2

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 34.1 – 23.1 – 16.4 –
Less than 50 miles 36.1 2.0 S S S S
50 to 99 miles S S 30.9 0.6 31.8 0.1
100 to 249 miles 23.0 2.3 21.2 2.3 21.9 1.2
250 to 499 miles 29.4 2.8 20.6 2.5 20.3 3.2
500 to 749 miles 43.8 2.1 19.0 1.7 19.4 1.6
750 to 999 miles 33.7 1.6 23.8 1.1 23.6 1.6
1,000 to 1,499 miles S S 16.0 1.1 17.1 1.8
1,500 to 1,999 miles 28.0 1.8 20.7 1.9 22.3 3.2
2,000 miles or more 27.8 2.2 36.1 5.1 36.5 8.0

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 34.1 – 16.8 – 15.5 –
Less than 50 miles 36.1 2.0 36.0 2.0 38.6 –
50 to 99 miles S S 30.9 0.7 31.8 0.1
100 to 249 miles 23.1 2.4 21.1 1.7 21.8 1.0
250 to 499 miles 29.4 2.8 20.6 2.2 20.3 2.6
500 to 749 miles 43.8 2.1 19.0 2.1 19.4 1.7
750 to 999 miles 33.7 1.6 23.8 0.9 23.6 1.4
1,000 to 1,499 miles S S 19.1 1.0 19.8 1.5
1,500 to 1,999 miles 28.2 1.8 16.1 0.8 15.9 2.2
2,000 miles or more 27.9 2.0 27.0 1.3 27.5 3.1

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 39.2 – S S 39.8 –
Less than 50 miles S S S S S S
50 to 99 miles – – – – – –
100 to 249 miles S S S S S S
250 to 499 miles – – – – – –
500 to 749 miles – – – – – –
750 to 999 miles – – – – – –
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 48.7 8.2 47.5 14.7 47.5 9.8

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 36.8 – 47.5 – 31.8 –
Less than 50 miles S S 48.4 15.1 S S
50 to 99 miles 43.4 2.1 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 – – – – – –
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 49.6 0.5 49.5 8.4

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.