where t is the location parameter and s is the scale parameter. The special case when t = 0 and s = 1 is called the standard Cauchy distribution with the probability density function:
The Cauchy distribution is often cited as an example of a distribution which has no mean, variance or higher moments defined, although its mode and median are well defined and both zero.
When U and V are two independent normal random variables with standard normal distributions, then the ratio U/V has the standard Cauchy distribution.
The Cauchy distribution is sometimes called the Lorentz distribution
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