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隨機變數 (Random Variable) true 2025-12-28T16:58:42.847Z markdown 2025-12-28T16:41:51.938Z

Discrete

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

Probability P(X=x)=p_i

Cumulative Distribution Function (CDF)

Continuous

Probability Density Function (PDF)

Cumulative Distribution Function (CDF)