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Latest Discussions

• DOE

  Hallo,I have three  factors. for each one i have 3 Levels .I want to make a Design with only 9 runs .Can you please tell me how to do this.Thank you in advance.

  Sam_199111

  Discussions |

  Mar 8, 2023 5:13 AM

  1370 views | 2 replies

• Fit Definitive Screening vs. Stepwise (min. AICC) for model selection

  I am trying to fit a model to a 17-run DSD with 4 factors. I am evaluating two methods of doing so: the 'Fit Definitive Screening' platform that is recommended by JMP documentation, as well as the older forward selection method with minimum AICC as the criterion. Based on domain knowledge, I would have expected a quadratic effect for factor B which looks like a plateau, with the low level being si...

  QW

  Discussions |

  Mar 7, 2023 7:09 AM

  2166 views | 2 replies

• Calculation a p-value in a data table (regression) using row formulae

  Background: Suppose I have rows of x, y data (SN_C, Value [Sigma Units]) as shown in attached file but also pasted below.   Slope_8 is calculated from the previous 8 [x.y] values. I want to compare the slope_8 value to the null hypothesis for linear regression (slope =0) and provide a p-value. Is there an easy way to do this? The formula for the slope 8 was taken from these discussion boards (@txn...

  fat_angus

  Discussions |

  Mar 3, 2023 5:11 AM

  1795 views | 2 replies

• DOE for Nested Factors

  Hello!  I'm designing an experiment with 5 factors.  Factor X1 is Ingredient Type, a two-level categorical variable (Ingredient A or Ingredient B).  But we also want to investigate the concentration of both ingredients.  Ingredient A has a range of 5% to 20%, while Ingredient B has a range of 1% to 10%.  I can't include this as three independent factors.  I see two reasonable options:- Run two seq...

  chris_rigdon

  Discussions |

  Mar 2, 2023 8:40 AM

  2154 views | 2 replies

• Specifying axial value as rotatable in custom design

  Hello,
  
  I am trying to create a custom DOE in order to maximize the response yield of a target quantity as a function of two continuous factors and one 2nd level categorical factor. The interactions of these factors are of the third order, and I am specifying 2 center points. However, I also want to define axial values to set axial positions such that I get a rotatable surface, similar to that of a ...

  tokiwon

  Discussions |

  Feb 24, 2023 9:44 AM

  1670 views | 3 replies