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Probability theory and odds calculators 🎲 calculators
Explore 3 free probability theory and odds calculators 🎲 calculators. Calculate in your browser with clear inputs, worked examples, and transparent methods.
3 calculators available
- False-Positive Rate & Population Shares
Separate a classifier’s false-positive rate from false-positive and true-negative shares of the whole population.
- Sample Proportion from Successes & Trials
Calculate the observed success fraction p-hat from counts, or recover a compatible whole-number count.
- Three Independent Events: All, Any, One or None
Combine three mutually independent event probabilities to find all three, at least one, exactly one and no-event chances.