php $n=$_POST['num']; $str=$_POST['arr']; $x=explode(',',$str); $sum=0; $sum1=0; for($i=0;$i<$n;$i++) {$sum=$sum+$x[$i]; } $mean=$sum/$n; echo"$sum "; echo"$mean "; for($i=0;$i<$n;$i++) {$t[$i]=($x[$i]-$mean); // subtracting mean from individual value and squaring the result(after subtracting) in next step $square[$i]=(pow($t[$i],2)); } print_r($t); print_r($square); for($i=0;$i<$n;$i++) {$sum1=$sum1+$square[$i]; // calculating sum of square } $avg=$sum1/$n; // finding mean of above calculated sum $standard_Deviation=sqrt($avg); echo" standard deviation is=$standard_Deviation"; ?>
php
ReplyDelete$n=$_POST['num'];
$str=$_POST['arr'];
$x=explode(',',$str);
$sum=0;
$sum1=0;
for($i=0;$i<$n;$i++)
{$sum=$sum+$x[$i];
}
$mean=$sum/$n;
echo"$sum
";
echo"$mean
";
for($i=0;$i<$n;$i++)
{$t[$i]=($x[$i]-$mean); // subtracting mean from individual value and squaring the result(after subtracting) in next step
$square[$i]=(pow($t[$i],2));
}
print_r($t);
print_r($square);
for($i=0;$i<$n;$i++)
{$sum1=$sum1+$square[$i]; // calculating sum of square
}
$avg=$sum1/$n; // finding mean of above calculated sum
$standard_Deviation=sqrt($avg);
echo"
standard deviation is=$standard_Deviation";
?>