Skewness is a commonly used measure of the asymmetry of the probability distributions. A typical skewness interpretation comes down to an image like this: It looks extremely simple: using the skewness sign, we get an idea of the distribution form and the arrangement of the mean and the median. Unfortunately, it doesn’t always work as expected. Skewness estimation could be a highly misleading metric (even more misleading than the standard deviation). In this post, I discuss four sourc...