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Glite Dictionary
📈 Like a normal log 📊 A special distribution
lognormal

lognormal

1 9.1
Describing data that become normally distributed after taking the logarithm
  • adjective
  • /ˌlɔɡˈnɔrməl/
  • Specialized
: lognormal
  • We then created a lognormal distribution for resources at each play-prospect combination by multiplying the play mean and standard deviation by the prospect's areal share.
  • lognormal distribution

Examples

  • In statistics, a dataset can be described by a lognormal distribution if the logarithm of the values follows a normal distribution.

  • Either the log-logistic distribution or the lognormal distribution may be appropriate.

    Academic text (2013)

  • First, we fitted a lognormal distribution to each of the play resource distributions.

    Academic text (1991)

  • For the purposes of the multivariate analyses, the lognormal distribution (i.e., base 10) of reported income was used.

    Academic text (2011)

  • Diagnostic plots were also used to evaluate the suitability of a location-scale model with either a log-logistic or a lognormal distribution for the survival times.

    Academic text (2013)

  • When analyzing income data, researchers often find that it follows a lognormal distribution due to the skewness of wealth.

  • The lognormal distribution is commonly used in finance to model stock prices because it reflects the tendency for prices to move multiplicatively.

Surface Forms

lognormal positive

Morphology

lognormal = log + normal (semi-transparent) = log + normal

The components 'log' + 'normal' are structurally clear, but understanding requires knowing 'log' as 'logarithm' and the statistical sense of 'normal'.

Etymology

Lognormal joins log (short for 'logarithm') and normal (the bell-shaped 'normal' curve). A helpful way to remember it is to think: if you take the 'log' of the numbers their shape becomes the familiar normal curve, so something described as lognormal has that property.