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p-value Calculator

Welcome to our p-value calculator! You will never again have to wonder how to find the p-value

Two-tailed p-value
Z-score

Z-score: the test statistic follows the standard normal distribution N(0,1).

What is p-value?

Formally, the p-value is the probability that the test statistic will produce values at least as extreme as the value it produced for your sample. It is crucial to remember that this probability is calculated under the assumption that the null hypothesis is true!