search for: ndpa

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2023 Aug 19
1
Determining Starting Values for Model Parameters in Nonlinear Regression
Dear friends, Hope you are all doing well and having a great weekend. I have data that was collected on specific gravity and spectrophotometer analysis for 26 mixtures of NG (nitroglycerine), TA (triacetin), and 2 NDPA (2 - nitrodiphenylamine). In the dataset, x1 = %NG, x2 = %TA, and x3 = %2 NDPA. The response variable is the specific gravity, and the rest of the variables are the predictors. This is the dataset: dput(mod14data_random) structure(list(Mixture = c(17, 14, 5, 1, 11, 2, 16, 7, 19, 23, 20, 6, 13,...
2023 Aug 19
1
Determining Starting Values for Model Parameters in Nonlinear Regression
...23-08-19 16:19, Paul Bernal wrote: > > Dear friends, > > > > Hope you are all doing well and having a great weekend. I have data that > > was collected on specific gravity and spectrophotometer analysis for 26 > > mixtures of NG (nitroglycerine), TA (triacetin), and 2 NDPA (2 - > > nitrodiphenylamine). > > > > In the dataset, x1 = %NG, x2 = %TA, and x3 = %2 NDPA. > > > > The response variable is the specific gravity, and the rest of the > > variables are the predictors. > > > > This is the dataset: > > dput(mod14...
2023 Aug 20
1
Determining Starting Values for Model Parameters in Nonlinear Regression
...al wrote: > > Dear friends, > > > > Hope you are all doing well and having a great weekend.? I have data that > > was collected on specific gravity and spectrophotometer analysis for 26 > > mixtures of NG (nitroglycerine), TA (triacetin), and 2 NDPA (2 - > > nitrodiphenylamine). > > > > In the dataset, x1 = %NG,? x2 = %TA, and x3 = %2 NDPA. > > > > The response variable is the specific gravity, and the rest of the > > variables are the predictors. > > > > T...