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Capability Analysis for non normal data

  • 1.  Capability Analysis for non normal data

    Posted 06/19/18 01:10 AM
    I am looking for information on performing a Capability Sixpack Analysis on Minitab. Analysis using this functon 

    can be performed for Non Normal data and Normal data. While performing analysis for non-normal

    data a suitable distribution is to be chosen. While performing analysis for Normal data,

    we can transform the data using Johnson's transformation in case the hypothesis for normality

    is not met. In case the data is not normal and analysis is performed by transforming the data

    using Johnson's transformation, the result is different than when the analysis is performed

    using an alternative distribution. What is the correct approach? Which result should I consider

    for assessing the effectiveness of the process?


    Siddharth Sanghvi