Solution for Non-normally distributed data

#1
hello there,
I am doing some statistical analysis on medical sample data.
I need to need to find variables which influences the length of stay in hospital.
I was panning to do collaboration analysis and stepwise model for detecting regression model.

My data is nor normally distributed? How critical is that?

And how can I normalize it??

Thanks
Best regards
Agate
 

trinker

ggplot2orBust
#2
Agate said:
My data is nor normally distributed? How critical is that?
The assumption is that the error terms are normally distributed (i.e., the population is normally distributed). Look at a QQ plot of the residuals.