Probability Simulator
Explore probability with coins, dice, and claim testing. Watch experimental results approach theoretical probabilities over time.
Long-Run Proportion of Heads
0 flipsTotal Flips
0
Successes
0
Failures
0
Experimental
—
Theoretical
0.500
Cumulative experimental probabilityTheoretical probability = 0.5
Recent outcomes appear below the graph. Green means the selected event happened; red means it did not.
Observed
—
Observed %
—
Claim
80%
Difference
—
Observed proportion over timeClaimed probability
Collect observations first. Watch the observed proportion wobble, then settle toward the claimed probability if the claim is accurate.