Category:Lognormal Distributions

This category contains results about Lognormal Distributions.
Definitions specific to this category can be found in Definitions/Lognormal Distributions.

Let $X$ be a continuous random variable whose values are positive.

Let $Y$ be the logarithmic transformation of $X$:

$Y = \ln X$

Let $Y$ have a probability distribution which either is, or is approximated by, a normal (Gaussian) distribution.

Then $X$ is said to have a lognormal distribution.