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...ed") > plot(ecdf(non), do.points=FALSE, verticals=TRUE, add=TRUE, col="blue") But what I need instead are smooth curves, similar to ones that are generated from a theoretical cdf (attachment 2). I have looked at so many threads; one suggestion to someone else was to use library(fitdistplot) and look for distributions that may fit (e.g. weibull). But I could really use guidance before spending additional time on this. Thank you! -TW -- View this message in context: http://r.789695.n4.nabble.com/Plea-to-the-R-Gods-Theoretical-and-Empirical-CDFs-tp3567636p3567636.html Sent from the...