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Latest Discussions

• Ordinal Regression Help

  Hi,  I was wondering if there was a way to specify the comparison between variables with ordinal regression. I have my ordinal variable (OHI) compared to 3 different bones (femur, ilium, and rib). Based on the output, JMP is comparing the rib to the femur, and the rib to the ilium. Is there a way that I can also compare the femur to the ilium?  Here is the output:  

  geomb

  Discussions |

  Nov 17, 2022 4:51 AM

  1005 views | 1 replies

• Why don't i get significant letters even though my P value is <0.05?

  Hello everyone! I am running a regression analysis and even though my P-value is less than 0.05 (0.0385 in my case), the letters are all A, showing no significance. How can i get JMP to recognize the significance? Any experience here? Best regardsHaris 

  xaris19801001

  Discussions |

  Nov 14, 2022 12:00 PM

  5135 views | 6 replies

• GLM / Poisson with Overdispersion // use of AICc

  Hello. I have encountered the following issue while modeling with GLM/Poisson the data in the attached table (Response = Count, Regressor = X). Data visual exploration suggests a clear relationship between X and Count, but comparison of AICc for model with X vs null model favors the Null model (just intercept).  Scripts to reproduce the two models are embedded. I believe I have found an explanatio...

  matteo_patelmo

  Discussions |

  Nov 11, 2022 9:59 PM

  3211 views | 6 replies

• Contradictory Ranking: Group Means vs Nominal Logistic Regression

  We have four categories, each with 1000 (continuous) responses. The order for the average response A < B < C << D. The order obtained by nominal logistic regression: A < C < B << D.  (The difference between means B and C is 1.64%). I understand that nominal logistic regression is based on likelihood ratios for different rankings, but it is still puzzling to me that the same dataset yields a differ...

  tomSorger

  Discussions |

  Oct 28, 2022 1:07 PM

  3443 views | 7 replies

• What does an "estimate" represent for Boosted Trees ?

  Hello  Questions for Boosted Trees under Predictive Modeling platform: 1- What does an "estimate" represent at the split end mathematically ? Is it an expected change in response per unit change in the parameter (ie.. sensitivity ) ?  2- Assuming e.g. 200 layers of boosted trees model , is the final predicted model equal to the 200th i.e. last layers' model or an average of all 200 models ? I am n...

  altug_bayram

  Discussions |

  Oct 11, 2022 11:06 AM

  2484 views | 2 replies