public function getStandardDeviation()
{
$values = [];
foreach ($this->data as $row) {
$values[] = $row['Close'];
}
return std($values);
}
if (preg_match('/.*Test\\.php/', $file) !== 1) {
continue;
}
$filePath = __DIR__ . '/' . $file;
if (!file_exists($filePath) && !is_file($filePath)) {
continue;
}
echo PHP_EOL . $file . ' | ';
require_once __DIR__ . '/' . $file;
$className = explode('.', $file)[0];
$class = new ReflectionClass($className);
foreach ($class->getMethods() as $method) {
if (preg_match('/test.*/', $method) !== 1) {
continue;
}
if ($filterMethodRegexp && preg_match('#' . $filterMethodRegexp . '#', strtolower($method)) !== 1) {
continue;
}
$reflectionMethod = new ReflectionMethod($class->getName(), $method->name);
try {
if (!$reflectionMethod->isPublic()) {
continue;
}
$reflectionMethod->invoke($class->newInstance());
} catch (Exception $e) {
std(toString($e));
d($e);
}
}
echo PHP_EOL;
}
function testClassDiv($div, $data, $classes, $gender, $showResult = false)
{
global $tests, $students, $subjects;
$tests++;
$score = array();
/*$score:array(
1(性别)=>array(
1(班号)=>array(
1(科目号)=>array(
学号=>本科分数
)
)
)
)
*/
//将div分班方案分解为score分数表
for ($subject = 0; $subject < $subjects; $subject++) {
foreach ($div as $gender_in_array1 => $array1) {
foreach ($array1 as $class => $array2) {
foreach ($array2 as $student) {
$score[$gender_in_array1][$class][$subject][$student] = $data[$student][$subject];
}
}
}
}
//$_SESSION['score']=$score;
//print_r($score);
$result = array();
for ($subject = 0; $subject < $subjects; $subject++) {
for ($class = 0; $class < $classes; $class++) {
$result[$class][$subject]['num'] = count($score[$gender][$class][$subject]);
//得到每班每学科的人数
$result[$class][$subject]['sum'] = array_sum($score[$gender][$class][$subject]);
//得到每班每学科的和
$result[$class][$subject]['aver'] = $result[$class][$subject]['sum'] / $result[$class][$subject]['num'];
//得到每班每学科的平均值
//$result[$class][$subject]['std']=std($score[$gender][$class][$subject],$result[$class][$subject]['aver']);//得到每班每学科的标准差
}
}
if ($showResult) {
echo "\n<br>result" . $gender . ": ";
print_r($result);
}
/*for($subject=0;$subject<$subjects;$subject++){
for($class=0;$class<$classes;$class++){
$std[]=$result[$class][$subject]['std'];
}
}
$std_sum=array_sum($std);//各班各学科的标准差的和*/
$aver_std = array();
for ($subject = 0; $subject < $subjects; $subject++) {
$aver = array();
for ($class = 0; $class < $classes; $class++) {
$aver[] = $result[$class][$subject]['aver'];
}
$aver_std[] = std($aver);
}
$aver_std_sum = array_sum($aver_std);
//各班每学科总分的标差的和
return $aver_std_sum;
}
function coefficient_of_variation($arr)
{
return std($arr) / mean($arr) * 100;
}