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docs: update education/statistics/random-variable

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education/statistics/random-variable.md
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title: 隨機變數 (Random Variable) title: 隨機變數 (Random Variable)
description: description:
published: true published: true
date: 2025-12-28T16:54:25.985Z date: 2025-12-28T16:58:42.847Z
tags: tags:
editor: markdown editor: markdown
dateCreated: 2025-12-28T16:41:51.938Z dateCreated: 2025-12-28T16:41:51.938Z
@@ -14,6 +14,11 @@ dateCreated: 2025-12-28T16:41:51.938Z
A set of probability value **p~i~** assigned to each of the values taken by the discrete random variables **x~i~**. A set of probability value **p~i~** assigned to each of the values taken by the discrete random variables **x~i~**.
$0 \leq p_i \leq 1$ and $\sum_{p_i} = 1$
Probability
$P(X=x)=p_i$
### Cumulative Distribution Function (CDF) ### Cumulative Distribution Function (CDF)
## Continuous ## Continuous