From 8478838b430c5ee4426c848e7754cef2b735f3c8 Mon Sep 17 00:00:00 2001 From: phidias Date: Sun, 28 Dec 2025 17:30:17 +0000 Subject: [PATCH] docs: update education/statistics/random-variable --- education/statistics/random-variable.html | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/education/statistics/random-variable.html b/education/statistics/random-variable.html index ff64728..d44fb6d 100644 --- a/education/statistics/random-variable.html +++ b/education/statistics/random-variable.html @@ -2,7 +2,7 @@ title: 隨機變數 (Random Variable) description: published: true -date: 2025-12-28T17:29:56.513Z +date: 2025-12-28T17:30:17.201Z tags: editor: ckeditor dateCreated: 2025-12-28T16:41:51.938Z @@ -12,7 +12,6 @@ dateCreated: 2025-12-28T16:41:51.938Z

Probability Mass Function (PMF)

A set of probability value pi assigned to each of the values taken by the discrete random variables xi.

$0 \leq p_i \leq 1$ and $\sum_{p_i} = 1$

-

$0 \leq 1$


Probability
$P(X = x) = p_i$

Expectation
 

Cumulative Distribution Function (CDF)