Monty Hall experiment
Test staying versus switching under the classic host rules. If the host opens doors without knowing the prize or offers switches selectively, this model no longer applies.
Your inputs
Start with the example values, then replace them with your own. For tables, keep the vertical bar separators and use a dot for decimals.
This is an educational model with simplified assumptions and a pseudorandom generator. Do not use its results as a forecast or for gambling decisions.
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Result and workspace
Use the start button to open your result or activity.
How it works
The host knows the prize, always opens a losing unchosen door, and always offers a switch. Compare staying and switching.
Worked example
These sample results use the original example inputs in the form. They do not change when you edit your inputs; your own result appears in the workspace.
- Stay wins: 320
- Switch wins: 680
- Stay win rate: 32 %
Read the result carefully
Results depend on the values and assumptions shown above. Change one input at a time to see its effect. A blank or unavailable result means the data does not support a calculation; it is not zero.