🎰
Probability Spinner Lab
Mathematics
Score
0
Streak
0
Exp
1/10
🎲 Spinner: —
Predicting:
Your prediction for :
25%

Run a probability experiment 🎰

Predict how often an outcome will happen, then hit SPIN ×1000. Watch the wheel blur and a histogram build itself live, settling toward the theoretical line. That's the Law of Large Numbers — the more trials, the closer experimental gets to theoretical! 📈

4 equal colours → each is 1 out of 4 = 25%. After 1000 spins, every bar sits near the 25% line.
A 4-colour spinner: each colour is 1 out of 4, so theoretical probability = 25%.
Flip 2 coins: two heads happens 1 out of 4 times = 25%.
Roll 2 dice: a sum of 7 is the most likely — six ways out of 36 ≈ 17%.
  1. 1Read the experiment and set your prediction % with the slider.
  2. 2Optional: hit Test spin a few times to get a feel.
  3. 3Hit SPIN ×1000 — the histogram builds live and converges! ⚡
  4. 4The closer your guess to theoretical, the more points. 🎯

Menu

EXPERIMENT COMPLETE!
★★★

You saw the Law of Large Numbers in action: with enough trials, experimental probability always drifts toward the theoretical value. That's the heart of statistics! 📊

📱

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