Chi-Square

import {chiSquare, DistributionData, Distribution, ChiSquareTestResult, chiSquareCriticalValue, ChiSquareOptions} from "@folge3/chi-square";

const data: DistributionData = {
    rows: ['row1', 'row2'],
    columns: ['column1', 'column2'],
    data: [
        [52, 27],
        [23, 56]
    ]
}

const distribution: Distribution = new Distribution(data);

const options: ChiSquareOptions = {
    rowImpactWeightExponent: 0.3
}

// Run chi-square test with 5% uncertainty 
const result: ChiSquareTestResult = chiSquare(distribution, 0.05, options);

console.log(result);

// Get critical value for significance level 0.05 and 1 degree of freedom. 
const criticalValue = chiSquareCriticalValue(0.05, 1);

// ~3.841
console.log(criticalValue)