lognormal distribution

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log·nor·mal dis·tri·bu·tion

if a variable y is such that x = log y, it is said to have a lognormal distribution; this is a skew distribution.

lognormal distribution

see lognormal distribution.
References in periodicals archive ?
HFLS losses or attritional losses are modeled on an aggregate basis by one continuous distribution, where Franzetti proposes the Gamma, Inverse Gaussian, and lognormal distributions.
The best-fit distribution for electric gains was normal, while occupancy more closely resembled lognormal distributions.
infinity]]), herein considered to be "true" and assumed to have lognormal distributions (Meyer and Millar, 1999; Millar and Meyer, 2000):
Tests using monthly data for individual firms are not consistent with lognormal distributions.
There is one Johnson (Su) for unbounded data, one for bounded on both tails (Sb), and one leading to the lognormal distributions (SI).
Lognormal distributions are common in biological processes, and they typically arise when the underlying variables affect the outcome in a multiplicative manner (28).
In the absence of systematic research guiding the selection of distributions, most authors have specified f(x) to be a set of independent normal or lognormal distributions, with [theta] representing their means and variances.
Lognormal distributions of the mean blood lead concentration were specified by age and sex.
We assumed lognormal distributions for all studies where raw data were not available to us and fit the reported parameters in Crystal Ball (Table 2).
Moreover, because lognormal distributions preserve themselves under multiplication, stock returns will have a lognormal distribution over any time interval.