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Activity Number:
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152
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Type:
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Contributed
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Date/Time:
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Monday, July 30, 2007 : 10:30 AM to 12:20 PM
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Sponsor:
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Section on Survey Research Methods
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| Abstract - #309362 |
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Title:
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The Impact on Data Quality of the Transition to Clean-Burning, On-Highway Diesel
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Author(s):
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Paula Weir*+ and Pedro J. Saavedra and Benita O'Colmain
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Companies:
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Energy Information Administration and Macro International and Macro International
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Address:
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19343 Mill Dam Place, Lansdowne, VA, 20176,
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Keywords:
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variance ; bootstrap ; on-highway ; ULSD ; price
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Abstract:
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The Environmental Protection Agency required that by June 2006 refiners and imports of petroleum must ensure that at least 80 percent of the volume of highway diesel fuel they supply be Ultra-Low Sulfur Diesel (ULSD). By December 2010, all on-highway diesel must be ULSD. Between 2006 and 2010, both ULSD and low sulfur diesel (LSD) may be sold at retail locations outside of California, with some outlets carrying both fuels and others carrying only one. Until January 2007, EIA collected the price of on-highway diesel without sulfur distinction. This paper describes how the weekly diesel price survey was modified to account for the transition to ULSD. One aspect central to the design was the estimation of the proportion of each kind of diesel sold in each sampling cell. An evaluation of the variance using a bootstrap method and sensitivity analysis of alternate assumptions are presented.
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