James Mukombwe

6 Questions 6 Answers 0 Followers

Questions related from James Mukombwe

Any example of Data Envelopment Analysis (DEA)?

Dear colleagues I am trying to use DEA to answer the following objectives. Any material I can follow as examples? 1. What is the empirical relationship between competition and medical scheme...

15 September 2023 7,076 0 View

How can I interpret a ratio variable?

Dear colleagues, I am running a regression in which I have the following regression FoodExp = 67.04 DepRatio +.....e My interest is in the interpretation of the coefficient on the dependency...

17 February 2021 2,303 2 View

What is the solution to small but significant coefficients?

Dear all, I am running a regressing distance to input markets on household crop diversity (number of crops grown). The result show that reducing distance to an input market increases crop...

09 November 2020 9,851 4 View

How can I test linearity in multilevel models in r or stata?

Dear all, I am running multilevel models ( two level and three levels) in r using nlme and lme4 packages but I need to test for linearity. Are there any recommendations of practical resources to...

30 September 2020 3,424 6 View

Does it make sense to demean binary variables?

Dear all, I am performing my data analysis and I got the following message from r software "boundary (singular) fit: see ?isSingular Warning message: Some predictor variables are on very different...

25 September 2020 2,192 2 View

Is there a practical example on how to run a PCA for multilevel models in R?Also any practical examples for multiple imputation or FIML in R or stata?

I am running multilevel models in R (two-level and three level models) for my thesis. However, I have two problems: 1. Missing data Literature advises use of Multiple Imputation (MI) or...

14 September 2020 9,640 3 View