Probability Concepts

Probability distributions, theorems, and foundational concepts

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What is the multiplication rule of probability?

A rule for finding the probability of two events both occurring (joint probability).

P(A ∩ B) = P(A) × P(B|A); If independent: P(A ∩ B) = P(A) × P(B)

Example: P(two aces in a row without replacement) = (4/52) × (3/51) = 12/2652

Note: For independent events, occurrence of one doesn't affect the other; use conditional probability otherwise