is denoted by continuous probability distribution probability distribution scale parameter log normal distribution Alejandra Gonzalez-Beltran Philippe Rocca-Serra a log-normal (or lognormal) distribution is a continuous probability distribution of a random variable whose logarithm is normally distributed. Thus, if the random variable {\displaystyle X} X is log-normally distributed, then {\displaystyle Y=\ln(X)} Y=\ln(X) has a normal distribution. Likewise, if {\displaystyle Y} Y has a normal distribution, then {\displaystyle X=\exp(Y)} X=\exp(Y) has a log-normal distribution. A random variable which is log-normally distributed takes only positive real values. The distribution is occasionally referred to as the Galton distribution or Galton's distribution, after Francis Galton. adapted from Wikipedia: https://en.wikipedia.org/wiki/Log-normal_distribution last accessed: 2016/11/11 dlnorm(x, meanlog = 0, sdlog = 1, log = FALSE) plnorm(q, meanlog = 0, sdlog = 1, lower.tail = TRUE, log.p = FALSE) qlnorm(p, meanlog = 0, sdlog = 1, lower.tail = TRUE, log.p = FALSE) rlnorm(n, meanlog = 0, sdlog = 1) https://stat.ethz.ch/R-manual/R-devel/library/stats/html/Lognormal.html user request: https://github.com/ISA-tools/stato/issues/47 probability distribution location parameter ready for release