7th Grade · Statistics & Probability
Equally Likely
7.SP.C.5
Definition
Outcomes that each have the same probability of occurring. If there are n equally likely outcomes, P(each) = 1/n.
Examples
- A fair coin: P(Heads) = P(Tails) = 1/2.
- A fair die: P(1) = P(2) = ... = P(6) = 1/6.
Key rule
A spinner with unequal sections is NOT equally likely — check the sections match.
Memory hook
Every outcome has the exact same shot.