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Number of deaths for 3.8 and six sigma process.

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  • #38360

    Akhi
    Participant

    Can anybody help me.
    1.What is number of deaths in a 3.8 sigma process and what is the number of deaths in 6 sigma process
    2.What is the number of plane crash in a year for 3.8 sigma process and what is for 6 sigma process.
     

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    #114678

    Bobd
    Participant

    Well, the chart I has says…
    3.8sigma = 10,724 defects per million
    6 sigma = 3.4 defects per million
    defects being either deaths or plane crashes…..
    I guess Six Sigma is really good, unless you’re one of the 3.4 ;-)

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    #114680

    Thaly
    Member

    The 6 sigma logic won’t apply to your scenario unless you know that the deaths are distributed normally (or atleast close). Usually such discrete events resemble more of a Poisson distribution (or other discrete distributions).
    If you have the right tools, you could build a neural network model (or a regression model) of your death/plane crash and predict your outcome.
    Thaly

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    #189626

    Noel
    Participant

    Just incase anybody is still looking for this info…

    3.8 Sigma 98.93%
    6 Sigma 99.99966%

    20,000 lost mails every hour
    7 mails lost every hour

    Unsafe drinking water for almost 15 minutes each day
    One unsafe minute every seven months

    5000 incorrect surgical operations every week
    1.7 incorrect surgical operations every week

    Two short or long landings at most major airports each day
    One short or long landing every 5 years

    200,000 wrong drug prescriptions every year
    68 wrong drug prescriptions every year

    No electricity for almost 7 hours each month
    One hour without electricity every 34 years

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