I am trying to reproduce the results of a colleague and I am having difficulty understanding how to find a PDF of a data set. The calculations were preformed on a chemical system and the energy for a 1000 random orientation of the molecule was calculated. Am I right in thinking that if I plot the CDF of the data set and fit the plotted CDF to a function, f(x), that df(x)/dx = PDF of the data set?(adsbygoogle = window.adsbygoogle || []).push({});

Thank you in advance for the help.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Finding an approximate CDF/PDF from a large data set

**Physics Forums | Science Articles, Homework Help, Discussion**