Binomial Test Calculator
Test whether observed number of successes differs from expected probability in a series of independent trials.
When to Use
- Binary outcomes (success/failure, yes/no)
- Independent trials
- Testing against known probability
Examples
- Testing if coin is fair (50% heads)
- Checking if response rate differs from industry average
- Testing Mendelian inheritance ratios
Null Hypothesis
H₀: Observed proportion equals expected probability (p = p₀)