I have a data set of 16000 records of 5 ordinal variables(Customer Satisfaction(response variable), service, quality, knowledge, responsiveness) which are survey responses in 0-10 scale. All the variables are highly left skewed (majority concentrated at 10 scale- approx 80% and rest 20% equally distributed across the others). I need to identify the impact and relation on the response variable from rest 4 independent variables.
Since the data is not normally distributed I am unsure on how to proceed. I thought of doing under-sampling but still unclear on how to proceed after that. Could some one share their knowledge on how to work on such data. Thanks in-advance.