7th Grade · Statistics & Probability
Experimental Probability
7.SP.C.6
Definition
The ratio of the number of times an event occurs to the total number of trials conducted. Based on actual observed results.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- 13 heads out of 20 flips: experimental P(Heads) = 13/20 = 0.65.
- Theoretical P(Heads) = 0.50 — the experiment gave 65%, not exactly 50% but close.
Key rule
More trials bring experimental probability closer to theoretical.
Memory hook
What actually happened, out of how many tries.