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• Help: Best practices regarding DOE blocking, split/strip plots, covariates, nuisance factors, and ANCOVA

  Hi All,   Hoping to get some feedback from experts and the collective mind regarding the above topics. I'll first describe the scenario and then go into the problem at hand. SCENARIO: Our business is often in a situation where DOEs run by people in R&D suffer from an external nuisance factor -- and managing this in order to "save" the DOE is sometimes challenging. The R&D people will typically gen...

  SDF1

  Discussions |

  Jan 31, 2023 8:29 AM

  2462 views | 4 replies

• Matrix from variables

  If I defined variables  a=5; b=3;what is the fastest/most elegant way to get?  m = [5,3]Is there something better thanm= Matrix(Eval({a,b}));And why doesm=[Eval(a),Eval(b)]not work?
  
  Any links to related posts are welcome :) 

  hogi

  Discussions |

  Jan 31, 2023 3:43 AM

  2581 views | 6 replies

• How do I use a defined subset of items in my covariate list.

  The title is pretty much it. I have a list of 5 covariates, and 703 items on the list. Most are expensive so i want to choose only from say items 23-39 and items 267, but i want to bring the list along in the code in-case we have to bite the bullet and augment to more expensive items later on.
  
  Is this doable?
  
  Thanks

  ehchandlerjr

  Discussions |

  Jan 26, 2023 5:33 AM

  2996 views | 6 replies

• Evaluating DoE with (essentially) Run Order as a factor

  Hi, I have a relatively simple design that I'm not sure how to evaluate in JMP.
  We're trying to find an I-Optimal design for two factors.  One (X1), is a continuous factor with 2 levels and center points. The second (X2) is essentially just the run order times 4. The order of this variable cannot change.  We know that X2 leads to changes in our response and want to properly model it's impact and in...

  ian-weykamp

  Discussions |

  Jan 20, 2023 12:00 AM

  1997 views | 3 replies

• DOE with Three 2 level factors and One 3 level factor that needs blocking

  Hello, I am trying to to design a DOE with the following factors:X1   -1   +1X2   -1   +1X3   -1   +1X4   L1   L2   L3 Due to experimental logistics, X4 cannot be changed easily; it requires an entire day to change. The other factors can be changed easily during each experiment. I was thinking of just doing a full factorial DOE design with X1, X2, and X3; and then repeating that same design for ea...

  MANCOVAPlotBird

  Discussions |

  Jan 19, 2023 12:01 PM

  2691 views | 3 replies