# Erlang Distribution

by Donald Schaefer
Erlang Distribution Offers Apple Watch App
Check the details on WatchAware

The Erlang distribution is a two parameter family of continuous probability distributions.

### App Details

Version
1.3
Rating
NA
Size
1Mb
Genre
Education Productivity
Last updated
September 30, 2020
Release date
August 16, 2016

### App Store Description

The Erlang distribution is a two parameter family of continuous probability distributions.

The Erlang distribution can be used to model the time to complete n operations in series, where each operation requires an exponential period of time to complete.

The Erlang distribution is utilized to examine the number of telephone calls which might be made at the same time to the operators of the switching stations. This work on telephone traffic engineering has been expanded to consider waiting times in queueing systems in general. The distribution is now used in the fields of stochastic processes and of biomathematics.

The intervals between call arrivals is then an Exponential distribution, and the sum of k such distributions is an Erlang distribution (i.e. the time before the kth call arrives), so the Poisson, Exponential, Erlang and Gamma distributions are very closely related to one another.

For the Erlang Distribution App three data parameters for the Real Rate of Change ( λ ), Scale ( μ ) and Shape ( k ) are input via sliders to compute PDF and CDF values and the Erlang mean and variance. The PDF and CDF values are displayed both in data table and graph forms.

The PDF and CDF graphs are touch interactive graphs for computed (x/Pr(x) paired values. The graphs have a touch feature whereby upon the touch a slidable vertical line appears. Upon movement of the line a paired (x,Pr(x) values appear relative to the line position on the graph curve.

The horizontal x-axis displays computed (x) values. The vertical y-axis plots a range of Pr(x) values.

Disclaimer:
AppAdvice does not own this application and only provides images and links contained in the iTunes Search API, to help our users find the best apps to download. If you are the developer of this app and would like your information removed, please send a request to [email protected] and your information will be removed.