Published Online: 15 SEP 2006
Copyright © 2002 John Wiley & Sons, Ltd
Encyclopedia of Environmetrics
How to Cite
El-shaarawi, A. 2006. Lognormal Distribution. Encyclopedia of Environmetrics. 3.
- Published Online: 15 SEP 2006
The lognormal distribution is widely used by environmental scientists to model their data. Its popularity is based on the fact that many environmental measurements are non-negative and their histograms are frequently skewed to the right but the histograms of log-transformed data resemble those of the normal distribution. Another reason for its popularity is the simplicity of performing the analysis using the familiar normal theory methods. It has been shown that the lognormal distribution arises naturally by applying the central limit theorem when a multiplicative process is used to combine the error.