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An EWMA model application for quality control analysis in the production of primary aluminium: CVG-Venalum case

Author

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  • Marianela Luzardo Briceño

    (Universidad de Los Andes. Instituto de Estadística Aplicada y Computación (IEAC).)

Abstract

In this paper it is used the analysis of series of time in order to study the conduct of the consumption of fluoride of aluminium (AlF3) in four of five lines of production of primary aluminium with competitive quality in the Venezuelan company of Aluminium of the Venezuelan Corporation of Guayana (C.V.G., Venalum). It is performed, in addition, an analysis of the behavior of the consumption of AlF3 under the approach of quality control of temporary information (EWMA) for every line. These analyses will be done in a comparative way, trying to check similarities among four lines of production

Suggested Citation

  • Marianela Luzardo Briceño, 2006. "An EWMA model application for quality control analysis in the production of primary aluminium: CVG-Venalum case," Economía, Instituto de Investigaciones Económicas y Sociales (IIES). Facultad de Ciencias Económicas y Sociales. Universidad de Los Andes. Mérida, Venezuela, vol. 31(22), pages 41-55, january-d.
    • Handle: RePEc:ula:econom:v:31:y:2006:i:22:p:41-55
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    More about this item

    Keywords

    aluminium; arima; weigh exponential moving averages; fluoride; reduction;
    All these keywords.

    JEL classification:

    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models

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