Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข 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.
Related terms
Sample Space: The set of all possible outcomes in an experiment.