Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
A probability rule stating that the probability that events A and B both occur equals the probability that A occurs multiplied by the probability that B occurs given A has occurred, denoted P(A ∩ B) = P(A) · P(B | A).