1. The problem statement, all variables and given/known data I have two distributions that I'm comparing. They are probably closest in resemblance to a logistic distribution. Anyway my problem is that I am wanting to determine if the difference in the negative side of the tail is statistically signifcant. 3. The attempt at a solution I've calculated the skewness of the two distributions and i get -0.493 and -0.620 . But I really don't know how I would determine if it is statistically significant. Is there a test I can apply to determine this? I'm sorry if this is a really stupid question, but I don't have any good sources (books or otherwise) that explore this. Thanks in advance for any help.