Module: Distribution::LogNormal
- Extended by:
- Distributable
- Defined in:
- lib/distribution/lognormal.rb,
lib/distribution/lognormal/gsl.rb,
lib/distribution/lognormal/ruby.rb
Overview
From Wikipedia:
In probability theory, a log-normal distribution is a probability
distribution of a random variable whose logarithm is normally
distributed. If X is a random variable with a normal distribution, then
Y = exp(X) has a log-normal distribution; likewise, if Y is
log-normally distributed, then X = log(Y) is normally distributed. (This
is true regardless of the base of the logarithmic function: if loga(Y) is
normally distributed, then so is logb(Y), for any two positive numbers
a, b ≠ 1.)
This module calculate the pdf, cdf and inverse cdf for Beta Distribution.
Defined Under Namespace
Constant Summary collapse
- SHORTHAND =
'lognormal'