A bell-shaped distribution often used for unbounded value ranges in Bayesian statistics. Similar to a Normal distribution but with fatter edges (tails). It is a symmetric distribution with infinite variance. The formula for the simple case with mean 0 is 1/π(1+x2).
Also used in hcistats2e: Chap. 7: page 85
Used in glossary entries: Bayesian statistics, infinite variance, mean (μ), Normal distribution
Links:
Wikipedia: Cauchy distribution