# Log-Normal Distribution

> Source: https://sukruyusufkaya.com/en/glossary/log-normal-dagilim
> Updated: 2026-05-13T20:58:39.498Z
> Type: glossary
> Category: matematik-istatistik-optimizasyon
**TLDR:** A right-skewed continuous distribution used for positive variables whose logarithm is normally distributed.

<p>The log-normal distribution is well suited for modeling positive-valued processes that grow through multiplicative effects. Income, duration, file size, waiting time, and some biological quantities may follow this kind of distribution. Because it has a long right tail, it is also useful for understanding outlier behavior. In machine learning, it can matter in data transformations and target variable modeling. It provides a strong explanation for why log transformations often work well in practice.</p>