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Definition: Smoothing
Category: OECD - Data and Metadata Reporting
The process of removing fluctuations in an ordered series so that the result shall be "smooth" in the sense that the first level differences are regular and higher order differences small. Although smoothing can be carried out by freehand methods, it is usual to make use of moving averages or the fitting of curves by least squares procedures. In fact, the concept is closely tied to that of trend fitting. http://ec.europa.eu/eurostat/ramon/coded_files/OECD_data_metadata_report_handbook_EN.pdf
Source:
Marriott, F.H.C., 1990, "A Dictionary of Statistical Terms", 5th ed., Longman Scientific and Technical, Burnt Mill, Harlow, Essex, England, for the International Statistical Institute [quoted in Organisation for Economic Co-operation and Development (OECD), "Data and Metadata Reporting and Presentation Handbook", OECD, Paris, 2007]
Marriott, F.H.C., 1990, "A Dictionary of Statistical Terms", 5th ed., Longman Scientific and Technical, Burnt Mill, Harlow, Essex, England, for the International Statistical Institute [quoted in Organisation for Economic Co-operation and Development (OECD), "Data and Metadata Reporting and Presentation Handbook", OECD, Paris, 2007]
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