nikkov199525.github.io/webtech_task.html at main · nikkov199525/nikkov199525.github.io · GitHub

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<!DOCTYPE html><html lang="ru">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Коэффициент корреляции</title>
</head>
<body>
<h4>472043</h4>
<script>
        const urladress = window.location.href.split('?')[0];
        const params = location.href.split('?')[1];
        const paramArray = params.split('&');
        let A = [], B = [];
        for (const param of paramArray) {
            const [key, value] = param.split('=');
            if (key === 'A') {
                A = value.split(',').map(Number);
            } else if (key === 'B') {
                B = value.split(',').map(Number);
            }
        }
        function pearsonCorrelation(x, y) {
            const n = x.length;
            if (n === 0) return 0;
            const sumX = x.reduce((a, b) => a + b, 0);
            const sumY = y.reduce((a, b) => a + b, 0);
            const sumX2 = x.reduce((a, b) => a + (b * b), 0);
            const sumY2 = y.reduce((a, b) => a + (b * b), 0);
            const sumXY = x.reduce((total, xi, i) => total + (xi * y[i]), 0);
            const numerator = (n * sumXY) - (sumX * sumY);
            const denominator = Math.sqrt((n * sumX2 - sumX * sumX) * (n * sumY2 - sumY * sumY));
            if (denominator === 0) return 0;
            return numerator / denominator;
        }
        const correlationCoeff = pearsonCorrelation(A, B);
        const result = Math.abs(correlationCoeff).toFixed(3);
        document.title = result;
</script>
</body>
</html>