Mrs.D Math · 7th Grade

DATA
RUSH

Experimental Probability
Experimental P = outcomes ÷ trials
Fraction → Decimal → %
Relative Frequency
🎲 Classic
🌎 Real World
🎉 Mixed
🎲 Classic
🌎 Real World
🎉 Mixed
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📚 Experimental Probability

The Formula

P(event) = number of times event occurred ÷ total trials

This gives a fraction. Convert to a decimal (divide) then a percent (×100).

1
Count how many times the event happened in the experiment.
A coin flipped 20 times — lands heads 13 times
2
Write the fraction: favorable ÷ total trials.
13/20
3
Convert: 13÷20 = 0.65 = 65%

Answer Types in This Game

→ Fraction questions: Type the numerator and denominator, then press CHECK.
→ Decimal & Percent questions: Choose from 4 answer choices.

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