diff --git a/education/statistics/random-variable.html b/education/statistics/random-variable.html index 265836d..81e0c49 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: 2025-12-28T19:27:18.013Z +date: 2025-12-28T19:29:00.292Z tags: editor: ckeditor dateCreated: 2025-12-28T16:41:51.938Z @@ -27,19 +27,25 @@ dateCreated: 2025-12-28T16:41:51.938Z

Probabilistic properties of a continuous random variable.

 

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Expectation

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Expectation

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Cumulative Distribution Function (CDF)

Probabilistic properties of a continuous random variable.

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Symmetric

If there is a point that,

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Then,

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Is the expectation of this random variable, equal to the point of symmetry.

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Median and Quantiles

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The middle value of the random variable.
For median, set p to 0.5.

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The middle value of the random variable.
For median, set p to 0.5.

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Variance

A positive quantity that measures the spread of the distribution of the random variable about its mean value.
Larger values of the variance indicate that the distribution is more spread out.