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 is. 1  the ratio of the relative contraction strain (or transverse strain) normal to the applied load-to the relative extension strain (or axial strain) in the direction of the applied load.hen a material is stretched in one direction it tends to get thinner in the other two directions. Î¼ = - Îµt / Îµl (1) where Î¼ = Poisson's ratio Îµt = transverse strain Îµl = longitudinal or axial strain.