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# Php Code for Correlation Co-efficient

This php programming code is used to find the correlation co-efficient. You can select the whole php code by clicking the select option and can use it. When you click text, the code will be changed to text format. This php program code will be opened in a new pop up window once you click pop-up from the right corner. You can just copy, paste this php code and use it to find the correlation co-efficient.

```<?php
\$x=array(60,61,62,63,65);
\$y=array(3.1,3.6,3.8,4.0,4.1);
\$sum_y=0;\$sum_yy=0;\$sum_xy=0;\$sum_x=0;\$sum_xx=0;
\$n=5;
for(\$i=0;\$i<\$n;\$i++)
{
\$xx[\$i]=\$x[\$i]*\$x[\$i];
\$yy[\$i]=\$y[\$i]*\$y[\$i];
}
for(\$i=0;\$i<\$n;\$i++)
{
\$sum_x+=\$x[\$i];
\$sum_y+=\$y[\$i];
\$sum_xx+= \$xx[\$i];
\$sum_yy+=\$yy[\$i];
\$sum_xy+= \$x[\$i]*\$y[\$i];
}
\$nr=(\$n*\$sum_xy)-(\$sum_x*\$sum_y);
\$sum_x2=\$sum_x*\$sum_x;
\$sum_y2=\$sum_y*\$sum_y;
\$dr_1=(\$n*\$sum_xx)-\$sum_x2;
\$dr_2=(\$n*\$sum_yy)-\$sum_y2;
\$dr_3=\$dr_1*\$dr_2;
\$dr=sqrt(\$dr_3);
\$r=(\$nr/\$dr);
\$r=round(\$r,2);
echo "Total Numbers:".\$n."\nCorrelation Coefficient:".\$r;
?>```
##### Other Programming Codes
Online Calculator : Correlation Co-efficient
Click on the select code link to copy and paste this free php program code for correlation co-efficient.