PHPã§æœ€é »å€¤ã€ä¸å¤®å€¤ã‚’求ã‚る関数ã¤ãã£ãŸã€‚ - otukutunã®æ—¥è¨˜<?php class Statistics { //å¹³å‡å€¤ã‚’求ã‚る関数 public function average(array $values) { return (float) (array_sum($values) / count($values)); } public function variance(array $values) { // å¹³å‡å€¤ã‚’求ã‚ã‚‹ $ave = self::average($values); $variance = 0.0; foreach ($values as $val) { $variance += pow($val - $ave, 2); } return (float) ($variance / count($values)); } public function standardDeviation(array $values) { //
{{#tags}}- {{label}}
{{/tags}}