Exponential Distribution

Exponential Distribution

Exponential Distribution

Exponential distribution is used for describing time till next event e.g. failure/success etc.

It has two parameters:

scale – inverse of rate ( see lam in poisson distribution ) defaults to 1.0.

size – The shape of the returned array.

Example

Draw out a sample for exponential distribution with 2.0 scale with 2×3 size:

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Visualization of Exponential Distribution

Example

Result

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Relation Between Poisson and Exponential Distribution

Poisson distribution deals with number of occurences of an event in a time period whereas exponential distribution deals with the time between these events.

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