Chi-Square Goodness-of-Fit SimulationStatLens

Simulated samples

Select a dataset, then draw simulated samples to build the null distribution.

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Chi-Square Goodness-of-Fit Simulation

Compare one categorical variable's observed counts to a hypothesized distribution (H0). The tool repeatedly draws a fresh sample of the same size from H0, computes the χ2 statistic each time, and builds the null distribution. Your observed χ2 is marked on it — the p-value is the fraction of simulated samples at least that large.

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