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Sigma level

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  • #32187

    Sankar
    Participant

    Sir,
    I would like to know the calcualation of Sigma level my % of scrap is 0.9% and rework is 2%

    0
    #85623

    Riccardo
    Member

    Hi,
    if I remember, the formula to calculate the sigma level is:
    =0.8406+SQRT(29.37-2.221*LN(DPM))
    If you’ve 2% of rework and 0.9% of scraps, we can take in consideration 2.9% defects = 29000 defects per million.
    Your sigma level is 3.4 (I hope)
    Regards

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