Template:The lognormal distribution: Difference between revisions

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The lognormal distribution is commonly used to model the lives of units whose failure modes are of a fatigue-stress nature. Since this includes most, if not all, mechanical systems, the lognormal distribution can have widespread application. Consequently, the lognormal distribution is a good companion to the Weibull distribution when attempting to model these types of units.
#REDIRECT [[The Lognormal Distribution]]
As may be surmised by the name, the lognormal distribution has certain similarities to the normal distribution. A random variable is lognormally distributed if the logarithm of the random variable is normally distributed. Because of this, there are many mathematical similarities between the two distributions.  For example, the mathematical reasoning for the construction of the probability plotting scales and the bias of parameter estimators is very similar for these two distributions.
 
{{lognormal distribution probability density function}}
 
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{{lognormal distribution estimation of the parameters}}
 
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{{lognormal distribution general examples}}

Latest revision as of 08:48, 3 August 2012