Archetype Definition: a common character, image, symbol, or situation that occurs in literature and in life, and considered to be universal across most cultures. Archetype examples are found in the world around us every day: in our speech, our beliefs, media, sports, video games, psychology, art, and even our dreams. Archetypes are universal; that is, they occur across all cultures, religions, and parts of history.
The above plot illustrates Poisson probabilities for Î» = 7.5. and this plot illustrates Poisson probabilities for Î» = 15. The mean of the Poisson distribution is Î». For the Poisson distribution, the variance, Î», is the same as the mean, so the standard deviation is âÎ». Empirical tests. There are also some empirical ways of checking for a Poisson distribution. 1  The simplest and handiest way is to see if the variance is roughly equal to the mean for your Poisson data.
Poisson's ratio in various materials: table of Poisson's ratio Poisson's ratio of the elements are, unless otherwise cited, via Web Elements, which adduce references [2-4]. In a large compilation of properties of polycrystalline materials [5], most have Poisson's ratio in the vicinity of 1/3.