1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
Dismiss Notice
You must be a registered member in order to post messages and view/download attached files in this forum.
Click here to register.

DOE (Minitab) - Analyse Factorial Design with Higher Order Terms

Discussion in 'DOE - Design of Experiments' started by Wayne_Y, Apr 6, 2021.

  1. Wayne_Y

    Wayne_Y New Member

    Apr 6, 2021
    Likes Received:
    Trophy Points:
    Hi there,

    I am currently trying to use Minitab DOE to analyse some factors in terms of their significance and main effects. When I tried using the analyse factorial design function, I can choose the order of the terms I want and whether I want to include any interactions into the analysis.

    By having different order terms included in the analysis - the result in terms of the identified significant factors are different. Factor B was deemed insignificant when using only the single-order terms (see image below for reference).

    Can anyone please help to advise as to why this happens? Thank you.

    Image 1 - Higher Order Terms (2nd Order Interactions) Included

    Image 2 - Only 1st Order Terms (Main Terms) Included