**Definition:**A pdf is a probability distribution function. This function describes a statistical distribution. It has the value, at each possible outcome, of the probability of receiving that outcome. A pdf is usually denoted in lower case letters.

Consider for example some f(x), with x a real number is the probability of receiving a draw of x. A particular form of f(x) will describe the normal distribution, or any other unidimensional distribution.

**Terms related to PDF:**
*None*

**About.Com Resources on PDF:**
*None*

**Writing a Term Paper? Here are a few starting points for research on PDF:**

**Books on PDF:**
*None*

**Journal Articles on PDF:**
*None*