ChipsAndTruths.com · Probability Tool

Hit Frequency Calculator

Translate a per-trial probability into useful repeated-trial frequency measures.

Fact-first note: Average spacing does not mean an event is due. Independent trials do not remember how long the current gap has lasted.

Probability over repeated trials

Estimate how often an event appears

Runtime 1.0.108

Probability per trial (%) Number of trials

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Expected hits—

Chance of at least one hit—

Chance of zero hits—

Average trials per hit—

Standard deviation—

Approximate usual range—