No matter what class or book I see, the normal distribution is always advocated. I have been trying to find ways to assess relationship between variables for non normal distributions, most of which are exponential. Is there any other method other than spearman correlation to deal with such things?
Solved – How one can improve correlation (higher rho values) on non normal distributions
correlationnonparametricnormal distributionspearman-rho
Best Answer
There are many ways to assess the relationship between two numerical variables: Loess and various other smoothers, scatterplots, lattice plots, qq plots, just off the top of my head.
If you want a single number summary, then you have to deal with the limitations of single numbers. But you can transform the variables in various ways, as wel..