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Significant curvature with insignificant LoF

Discussion in 'DOE - Design of Experiments' started by Datterich, Nov 2, 2019.

  1. Datterich

    Datterich New Member

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    Hello everybody,

    I was running an unreplicated two-level factorial design with three center points for screening of my factors.
    The ANOVA-output of my data gave me a significant regression (which is good), but also a significant curvature together with an insignificant lack of fit.

    My interpretation of this is that i do have a significant curvature, but my regression model is nonetheless able to model my datapoints (the residual plots also look as if the regression does adequatly model the data).

    Is this assumption correct or do I miss omething vital?

    Regards,
    Datterich
     
  2. Miner

    Miner Moderator Staff Member

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    Can you attach your data set?
     
  3. MorisonEmely

    MorisonEmely New Member

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    Well, Little bit this topic is belong to me.
     
  4. Miner

    Miner Moderator Staff Member

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    What is your question?
     
    Andy Nichols likes this.