I just gave you an example, there are many statistical measures that have that particular requirement. If it is not normality then something else. Every statis

I just gave you an example, there are many statistical measures that have that particular requirement. If it is not normality then something else. Every statistical measure makes assumptions, most of which never quite hold true. That was my point. When someone uses statistics they always fudge things a bit. Many times does not matter, if you were stickler for "precision" it would not work.