The National Family Opinion Poll (NFO) data base is composed of more than 400,000 fuel purchase records collected from 11,390 vehicles. This report provides a basic introduction to the information available in the NFO data base. Summary tables of the data are presented to provide an overview of the trends shown in the data base for fuel economy, vehicle miles of travel, and fuel demand. In an effort to familiarize the reader with the NFO data, this report discusses the steps that were taken to prepare the raw data for analysis, including error correction, imputing purchases, smoothing, and collapsing to monthly summary records. An overview of available data on In-Use Fuel Economy, Vehicle Miles of Travel, and Fuel Demand on a quarterly basis is given. Trends in these variables are highlighted. This section also introduces the reader to the format used in the more detailed tables. The data are divided into three parts: In-Use Fuel Economy, Vehicle Miles of Travel, and Fuel Demand and Fuel Prices. The hierarchical structure into which the individual tables fit is summarized. (ERA citation 09:035706)


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    Title :

    Vehicle Purchase and Use Data Matrices: NFO Gasoline Diary Panel


    Publication date :

    1981


    Size :

    132 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English