📊 Chi-Square Calculator
Calculate the chi-square test statistic from observed and expected frequencies.
What is the Chi-Square Test?
The chi-square test statistic measures how well observed data fits an expected distribution. It is calculated as χ² = Σ((Oᵢ - Eᵢ)² / Eᵢ), where Oᵢ are observed frequencies and Eᵢ are expected frequencies. A larger chi-square value indicates a greater difference between observed and expected data.
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