7th Grade · Statistics & Probability
Tree Diagram
7.SP.C.8
Definition
A diagram showing all possible outcomes of a multi-step probability experiment using branches. The total outcomes equal the product of the choices at each step.
Examples
- Flipping a coin twice: 2 × 2 = 4 outcomes (HH, HT, TH, TT).
- Flip a coin then roll a die: 2 × 6 = 12 total outcomes.
Key rule
Multiply the branches at each level to find the total number of outcomes.
Memory hook
Branch out each step, then count the paths.