From 5181c3d8a002547b5234436175a59fac9d437201 Mon Sep 17 00:00:00 2001 From: phidias Date: Sun, 28 Dec 2025 17:33:36 +0000 Subject: [PATCH] docs: update education/statistics/random-variable --- education/statistics/random-variable.html | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/education/statistics/random-variable.html b/education/statistics/random-variable.html index 8432fb0..eb694f8 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: 2025-12-28T17:32:50.361Z +date: 2025-12-28T17:33:35.543Z tags: editor: ckeditor dateCreated: 2025-12-28T16:41:51.938Z @@ -12,7 +12,7 @@ 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 ≤ pi ≤ 1 and ∑ pi = 1

-

Probability
$P(X = x) = p_i$

+

Probability
$p_i$

Expectation
 

Cumulative Distribution Function (CDF)