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Probability

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

Probability refers to the likelihood of an event occurring. It quantifies uncertainty by assigning numerical values between 0 (impossible) and 1 (certain) to events or outcomes.