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Minitab Prediction Equation

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  • August 27, 2007 at 5:39 pm #47961

    Ropp
    ★ 10 Years ★
    Participant

    I’ve completed a DOE in Minitab and would like to generate the prediction equation.  I know how to do it by hand but have to believe that Minitab has a way to do it that’s simple(but I’m just not seeing it).
     
    Thanks,
     

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    August 27, 2007 at 5:51 pm #160453

    Bower Chiel
    ★ 10 Years ★
    Participant

    Hi DaveThe constant and the coefficients for the equation are in the Factorial Fit section of the Session Window output.Best WishesBower

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    August 27, 2007 at 6:01 pm #160455

    Ropp
    ★ 10 Years ★
    Participant

    Thanks Bower, unfortunately I don’t have that in this case.  My experiment in this case was a 2 factor, but one of the factors had 3 levels.  Could that have made a difference?

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    August 27, 2007 at 10:32 pm #160464

    Bower Chiel
    ★ 10 Years ★
    Participant

    Hi DaveIf your factors are continuous variables, e.g. Temperature and Pressure, then you could use X1 as the Temperature values and X2 as the Pressure values and use multiple regression methods to build a model relating your response, Yield Y say. to X1 and X2. The simplest model would be y = a + bX1 + cX2. Interaction and curvature would imply a need for terms X1X2 and X1^2 and X2^2 to be included in the model.Best WishesBower

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