.. _variables-lognormal_uncertain-means-std_deviations:

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std_deviations
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Second parameter of the lognormal distribution (option 1)


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**Specification**

- *Alias:* lnuv_std_deviations 

- *Arguments:* REALLIST


**Description**


For the lognormal variables, one may specify either the mean
:math:`\mu` 
and standard deviation
:math:`\sigma` 
of the actual lognormal distribution.

This corresponds to the standard deviation of the lognormal random variable.


