Key takeaway: Probability terms measure chance and count outcomes, from sample space and tree diagram to conditional probability, permutations, expected value and the binomial distribution.
Probability begins in seventh grade with coins, spinners and number cubes, and returns in high school with conditional probability, counting methods and random variables. These probability terms cover both stages.
Each one comes with a tree diagram, a table or a model drawn to match the example, so the reasoning is easy to follow.
18 terms on this page, each with a definition, a figure and a worked example.
Probability Terms: the full list
Grade 7
- Compound Event 7.SP.C.8a
- Experimental Probability 7.SP.C.6
- Probability 7.SP.C.5
- Sample Space 7.SP.C.8b
- Simulation 7.SP.C.8c
- Theoretical Probability 7.SP.C.7a
- Tree Diagram 7.SP.C.8b
Grade 10 – Geometry
- Conditional Probability S-CP.A.3
- Independent Events S-CP.A.2
Grade 11 – Algebra 2
- Addition Rule of Probability S-CP.B.7
- Mutually Exclusive Events S-CP.B.7
Grade 12 – Precalculus
- Combination S-CP.B.9
- Expected Value S-MD.A.2
- Factorial S-CP.B.9
- Permutation S-CP.B.9
Grade 12 – AP Statistics
- Binomial Distribution AP Statistics Unit 2
- Law of Large Numbers AP Statistics Unit 2
- Random Variable AP Statistics Unit 2