# Erlang Distribution

**Erlang Statistical Distribution**

**General Characteristics**

- The Erlang distribution is, like its ‘parent’ distribution, a two-parameter family of continuous probability distributions.

- It is a special case of Gamma distribution.

**Specific Characteristics**

**Key Measures:
**

Mean, k

**Range of values:**

0 < x < ∞

**Mean:**

Mean = k

**Standard Deviation, SD:**

SD = (Mean) / √[k]

**Application**

Erlang distributions can be used; to calculate the time between failures, in telephone engineering to examine the number of calls that might be made simultaneously to call centers operators & in queuing theory.

**Erlang Statistical Distribution – Statistical Distributions**

**Education | thetqweb**