Hallo, I have to fit my distribution with Beta-prime. I found the parameters now I need to plot the Cumulative probability and the Probability density of my fitted data. With gamma for exemple is easy: PDF: plot(x,dgamma(x, shape,rate)) Cumulative probability: plot(x,pgamma(x, shape,rate)) How can I do with beta-prime? Can I use the pbeta and dbeta defined for Beta distribution even though my function is a Beta-prime? Thanks a lot! Ale -- View this message in context: http://www.nabble.com/Plotting-the-PDF-and-the-Cumulative-Probability-tp24387435p24387435.html Sent from the R help mailing list archive at Nabble.com.