Hello,
I see many of your probability density functions plots have surfaces under curves exceeding 1 by a lot. I don't think that's correct. The probability of any variable occurrence (i.e. the surface under pdf) may not exceed 1 regardless of distribution of that process.
For instance see the webpage of statistical software maker (Reliasoft) with an example of Weibull pde's: http://www.weibull.com/hotwire/issue14/ch6_fig5.gif
Notice how small the y-axis values are.
Correct me if I'm wrong.
Thank you for contribution.
Michael