I need advice on what is a a reasonable number of cases to be deleted as outliers.
I have conducted an outliers analysis to identify univariate and multivariate outliers from my dataset. Alltogether 30% of the data was classified as outliers.
If I delete all of these outliers, my results appear to improve. Also, after deleting the outliers my sample size is still good (i.e., n=300).
- Is it reasonable to delete all the cases classified as outliers?