Index: The Book of Statistical ProofsGeneral TheoremsProbability theoryRandom variables ▷ Circular random variable

Definition: Let $X$ be a random variable with possible outcomes $\mathcal{X}$. Then, $X$ is called a circular random variable, if $\mathcal{X} = [0, 2 \pi)$ and if the probability density function of $X$ satisfies

\[\label{eq:pdf-circ} f_X(x + 2 \pi k) = f_X(x) \quad \text{for all} \quad k \in \mathbb{Z} \; .\]
 
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Metadata: ID: D229 | shortcut: rvar-circ | author: JoramSoch | date: 2026-04-20, 15:18.