Distribution Definition and 54 Discussions

The Cauchy distribution, named after Augustin Cauchy, is a continuous probability distribution. It is also known, especially among physicists, as the Lorentz distribution (after Hendrik Lorentz), Cauchy–Lorentz distribution, Lorentz(ian) function, or Breit–Wigner distribution. The Cauchy distribution

f
(
x
;

x

0

,
γ
)

{\displaystyle f(x;x_{0},\gamma )}
is the distribution of the x-intercept of a ray issuing from

(

x

0

,
γ
)

{\displaystyle (x_{0},\gamma )}
with a uniformly distributed angle. It is also the distribution of the ratio of two independent normally distributed random variables with mean zero.
The Cauchy distribution is often used in statistics as the canonical example of a "pathological" distribution since both its expected value and its variance are undefined (but see § Explanation of undefined moments below). The Cauchy distribution does not have finite moments of order greater than or equal to one; only fractional absolute moments exist. The Cauchy distribution has no moment generating function.
In mathematics, it is closely related to the Poisson kernel, which is the fundamental solution for the Laplace equation in the upper half-plane.
It is one of the few distributions that is stable and has a probability density function that can be expressed analytically, the others being the normal distribution and the Lévy distribution.

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13. B Define if the distribution is normal or not

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22. I Hypergeometric Distribution Calculation in Libreoffice

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23. Marginal Probability Distribution

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28. Determining relative amounts of work done

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31. I Place pieces on a chessboard randomly until 2 are adjacent

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35. Conditional Expectation of Multiple Independent Random Varia

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36. Simple Statistics Question

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37. Independent Process Probability distribution

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46. Uniform Distribution Probability

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48. Exponential Distribution Probability

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49. Probability Conditional Expectation

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50. Quick question about normal distributions

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