P-Value Calculator
Statistical Hypothesis Testing Calculator
Calculate p-values for statistical hypothesis tests with visual distributions and detailed interpretations.
Test Configuration
What is a P-Value?
The p-value is the probability of obtaining test results at least as extreme as the observed results, assuming the null hypothesis is true. A small p-value (typically ≤ 0.05) indicates strong evidence against the null hypothesis.
Distribution Visualization
Standard Normal Distribution (μ = 0, σ = 1)
Interpretation Guide
p < 0.01: Very strong evidence
p < 0.05: Strong evidence
p < 0.10: Weak evidence
p ≥ 0.10: No evidence
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