<?php
function calculateMedia($datos) {
    $total = count($datos);
    $suma = array_sum($datos);
    $media = $suma / $total;
    return $media;
}
//ejemplo de uso
$datos = array(2,4,3,1,5,2,5,1,2,4,1,1,3);
$media = calculateMedia($datos);
echo "La media aritmética de los datos es: " . $media;

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