selection

1. Evaluation of the most suitable model between LASSO and Forward stepwise selection.

Hello, please take into account this: I'm a beginner :) I need to assess which of the two following specifications of a model is more suitable and explain it. This is what I obtained running properly on R the tools I had: FORWARD STEPWISE SELECTION: LASSO REGRESSION: This shows the...
2. How do I assess which is the most suitable model?

Hey everyone, I am making an R project, and I have computed the models using all the methods we've studied in the lectures (particularly Lasso and Forward stepwise selection). In the conclusion, I have to assess which is the most suitable specification model. Could you help me writing...
3. Ordinal regression (logit) with selection variable?

Hi all, want to do an ordered logit regression. I have data from different sources and need to use the source as a selection variable for the dependent variable (only for the dependent variable, not for the regressors!). I know how to do this for a linear regression. Is there a way to do this...
4. Selecting subgroup with given mean and standard dev. below given value

I have a group of subjects with variable age and I would like to select a sub-group with given number of subjects where all selected subjects have age in the given range and the mean of the sub-group equals M, which is the middle of the range. Moreover, the standard deviation of the sub-group...
5. malthusian growth statistics

I've got populations consisting of a mix of two strains. I have the numbers of each strain at t=0hrs and t=24hrs. I have been trying to calculate the Malthusian growth parameter for each replicate. I am using the formula ln (Nf / N0) where Nf is the final number, and N0 is the starting...
6. Probability of selecting two different colored balls

Given an urn with x red balls, and y green balls, thoroughly mixed, what is the probability of choosing two colors in the first two picks, when the first pick is put back before the second pick?
7. [STATA - Lag length criteria]: How can I explain the results?

Good evening everyone. I got different output from the code: forval i = 1/118 { varsoc Illiq`i', maxlag(10) } that describes AIC,BIC,... lag information criterion, but I don't know how I can interpret them. How can I choose the correct number of lags on the basis of all these output...