Concept
Version 7
Created by Boundless
Two Types of Random Variables
![Probability Density Function](../../../../../../../../../figures.boundless-cdn.com/18079/raw/standard-deviation-diagram.jpg)
Probability Density Function
The image shows the probability density function (pdf) of the normal distribution, also called Gaussian or "bell curve", the most important continuous random distribution. As notated on the figure, the probabilities of intervals of values corresponds to the area under the curve.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Standard deviation diagram."
http://en.wikipedia.org/wiki/File:Standard_deviation_diagram.svg
Wikipedia
CC BY-SA.