}
unset($array[0]);
return array_sum($array) / count($array);
}
//get standard deviation
public function standardArray($File)
{
$avg = $this->avgArray($File);
$standard_deviation = 0;
for ($i = 1; $i < count($File); $i++) {
$standard_deviation = $standard_deviation + ($File[$i][1] - $avg) * ($File[$i][1] - $avg);
}
return sqrt($standard_deviation / (count($File) - 1));
}
}
$File = getdata('./test.csv');
function getdata($File)
{
$handle = fopen($File, 'r');
while (!feof($handle)) {
$csv[] = fgetcsv($handle);
}
fclose($handle);
return $csv;
}
$read = new readCSV();
$max = $read->maxArray($File);
$min = $read->minArray($File);
$mean = $read->meanArray($File);
$avg = $read->avgArray($File);
$standard = $read->standardArray($File);
unset($murderNum[0]);
try {
return array_sum($murderNum) / count($murderNum);
} catch (Exception $e) {
return $e->getMessage();
}
}
//get standard deviation
public function standardArray()
{
$csv = $this->File;
$avg = $this->meanArray($csv);
$standard_deviation = 0;
for ($i = 1; $i < count($csv); $i++) {
if (isset($csv[$i][2])) {
$standard_deviation = $standard_deviation + ($csv[$i][2] - $avg) * ($csv[$i][2] - $avg);
}
}
try {
return sqrt($standard_deviation / (count($csv) - 1));
} catch (Exception $e) {
return $e->getMessage();
}
}
}
$read = new readCSV('undead.csv');
$max = $read->maxArray();
$min = $read->minArray();
$range = $read->rangeArray();
$mean = $read->meanArray();
$standard = $read->standardArray();