Statistics & Probability

Independent events

Events where one occurring does not change the probability of the other. P(A and B) = P(A) × P(B).

Definition

Rolling a die twice — each roll is independent. Drawing two cards without replacement — NOT independent, because the first draw changes the second.

Used in these topics

Related terms

Conditional probability

The probability of one event given that another has occurred. Written P(A | B).

Mutually exclusive

Two events that cannot both happen at the same time. P(A or B) = P(A) + P(B).

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