The two functions are also related mathematically — you can obtain the cumulative distribution function of a random variable by integrating its probability density function.

What Is a Probability Density Function (PDF)? The probability density function (PDF) is an analytical technique that outlines how likely different outcomes are across a range of possibilities.

The notion of probability density for a random function is not as straight-forward as in finite-dimensional cases. While a probability density function generally does not exist for functional data, we ...

This paper describes and discusses graphical techniques, based on the primitive empirical cumulative distribution function and on quantile (Q - Q) plots, percent (P - P) plots and hybrids of these, ...