Chi Square Test

import java.io.*;

class Main

{

            public static void main(String args[])

            {

                        try

                        {

                                    BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

                                    System.out.println("Enter total numbers : ");

                                    int n = Integer.parseInt(br.readLine());

                                    double a[] = new double[n];

                                    System.out.println("Enter numbers : ");

                                    for (int i = 0; i < n; i++)            

                                    {

                                                            a[i] = Double.parseDouble(br.readLine());

                                    }

                                    double X,E;

                                    System.out.println("Enter critcal value : ");

                                    X = Double.parseDouble(br.readLine());

                                    System.out.println("Enter expected value : ");

                                    E = Double.parseDouble(br.readLine());

                                    ChiSquareTest cs=new ChiSquareTest();

                                    cs.chisqr(a,X,E);

                                   

                        }

                        catch(Exception e)         

                        {

                        }

            }

}

class ChiSquareTest

{

            public void chisqr(double a[],double X,double E)

            {

                        double b[]=new double[a.length];

                        double sum=0.0;

                        for(int i=0;i<a.length;i++)

                        {

                                    b[i]=a[i]-E;

                                    b[i]=b[i]*b[i];

                                    b[i]=(b[i]/E)+(b[i]%E);

                                    sum+=b[i];

                        }

                       

                        if(X>sum)

                        {

                                    System.out.println("Hypothesis accepted");

                        }

                        else

                        {

                                    System.out.println("Hypothesis rejected");

                        }

            }         

}