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I am having trouble finding the mean and variance for this log normal distribution.

  • 2
    $\begingroup$ Wikipedia gives expressions for the mean and variance of a log-normal distribution, i.e. for $\frac{c_{t+1}}{c_t}$ $\endgroup$
    – Henry
    Sep 25 at 15:11
  • 2
    $\begingroup$ if $X$ is lognormal $E(X^t)$ is not hard to do by evaluating the integral (you can get what you want from $t=1,2$), but easier still is to obtain it directly from the MGF of $\log(X)$ (a normal distribution), assuming you've already done (or otherwise have) that calculation. I believe some answers on site already have the result. $\endgroup$
    – Glen_b
    Sep 25 at 15:40

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