 # Exponential Distribution (Graphical)

Exponential Distribution:

The exponential distribution is a one-sided distribution completely specified by one parameter ; the density of this distribution is

The mean of the exponential distribution is .

The exponential distribution is a model for the length of intervals between two consecutive random events in time, or between a given point and the next nearest point. In this case is the rate of events – that is, the average number of events per a unit interval. (For details on what “random events” means here see Poisson process.

An important property of the exponential distribution is

Because of this property, the exponential distribution is also referred to as a ´memory-less distribution´. One of the applications of the exponential distribution is in queuing theory.

Browse Other Glossary Entries

## Test Yourself

Planning on taking an introductory statistics course, but not sure if you need to start at the beginning? Review the course description for each of our introductory statistics courses and estimate which best matches your level, then take the self test for that course. If you get all or almost all the questions correct, move on and take the next test.

### Data Analytics

Considering becoming adata scientist, customer analyst or our data science certificate program?

Analytics Quiz

Statistics Quiz

### Statistics

Looking at statistics for graduate programs or to enhance your foundational knowledge?

Statistics 1 Quiz

Regression Quiz

Regression Quiz

### Biostatistics

Entering the biostatistics field? Test your skill here.

Biostatistics Quiz

Statistics 2 Quiz

### Stay Informed

Our Blog

Read up on our latest blogs

Certificates

Courses

Find the right course for you