devfym\IntelliPHP\Math\Validation::MeanSquaredError()

Complexity

Conditions	2
Paths	2

Size

Total Lines	12
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	1

<?php
    public static function MeanSquaredError(array $expected, array $actual) : float
    {
        $n = count($actual);
        $total_diff = 0;

        for ($i = 0; $i < $n; $i++) {
            $total_diff += $actual[$i] - $expected[$i];
        }

        $total_diff /= $n;

        return round($total_diff, 4);
    }
}