Java Code for Correlation Co-efficient

This java programming code is used to find the correlation co-efficient. You can select the whole java code by clicking the select option and can use it. When you click text, the code will be changed to text format. This java 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 java code and use it to find the correlation co-efficient.

    import java.util.*;
    import java.lang.*;
    class Correlation_coefficient
    {
    public static void main(String args[])
    {
    double r,nr=0,dr_1=0,dr_2=0,dr_3=0,dr=0;
    double xx[],xy[],yy[];
    xx =new double[5];
    xy =new double[5];
    yy =new double[5];
    double x[]={60,61,62,63,65},y[]={3.1,3.6,3.8,4.0,4.1};
    double sum_y=0,sum_yy=0,sum_xy=0,sum_x=0,sum_xx=0;
    int i,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);
    double sum_x2=sum_x*sum_x;
    double 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=Math.sqrt(dr_3);
    r=(nr/dr);
    String s = String.format("%.2f",r);
    r = Double.parseDouble(s);
    System.out.println("Total Numbers:"+n+"\nCorrelation Coefficient:"+r);
    }
    }
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