Sample from Log-Normal Distribution
Dear Michael: Thank you very much for your help. Now it it is clear, meanlog and sdlog in the rlnorm are the mean and standard deviation of the normal distribution. once again many thanks steve On Sun, Jul 12, 2015 at 11:15 PM, Michael Weylandt <
michael.weylandt at gmail.com> wrote:
You can test this yourself quite easily: x <- rlnorm(1e6, meanlog=4) mean(x) mean(log(x)) Cheers, Michael
On Jul 12, 2015, at 7:40 PM, Steven Stoline <sstoline at gmail.com> wrote: Dear All: I need someone to clarify the value of the *meanlog* and *stlog* used in the function *rlnorm* when you sample from log-normal distribution. rlnorm(n, meanlog = 0, sdlog = 1) *For example: *y<- rlnorm(25, meanlog = 5, sdlog = 1) Is the value of the meanlog, *5*, the mean of the log-normal
distribution.
Similarly, is the value of the *sdlog*, *1*, the standard deviation of
the
log-normal distribution. or 5 and 1 are the mean and standard deviation of the normal distribution of x = log(y) ~N(mean =5, var = 1) with many thanks steve -- Steven M. Stoline 1123 Forest Avenue Portland, ME 04112 sstoline at gmail.com [[alternative HTML version deleted]]
_______________________________________________ R-sig-teaching at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-sig-teaching
Steven M. Stoline 1123 Forest Avenue Portland, ME 04112 sstoline at gmail.com [[alternative HTML version deleted]]