Re:Zipf’s Law Arises Naturally When There Are Underlying, Un...
by dekhn on Friday December 30, 2016 @01:16PM
(#13286013)
The Galton box generates a binomial distribution which when taken to the limit of n->infinity, produces a normal distribution.
Re:Zipf’s Law Arises Naturally When There Are Underlying, Un...
by klodolph on Friday January 06, 2017 @12:15AM
(#13334142)
This is incorrect, you need to take a limit as n->infinity while dividing by a factor of √n, otherwise the limit does not exist. But Galton boxes in practice are not very large, so they aren't very good approximations of normal distributions.
Most probability distributions are designed to model some kind of process. The time between clicks of a geiger counter is exponential, the number of clicks in a second is poisson. The amount of time your geiger counter lasts before it breaks and you have to buy a new one is weibull. That's the whole reason why we invented probability distributions in the first place: to model processes.