Asked by Ashish
on 12 Jun 2013

I have a dataset of a certain variable (100 values).

I want to find the mean and the variance of the dataset considering it follows a Lognormal distribution.

At last, I want to generate a random number from the Mean and Variance (found in the previous step).

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Answer by Matt J
on 12 Jun 2013

Accepted answer

Formulas for the maximum likelihood estimate of the mean and variance are given here:

http://en.wikipedia.org/wiki/Log-normal_distribution#Maximum_likelihood_estimation_of_parameters

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