//still having error on calling array in another method and possible problems wi

Question

//still having error on calling array in another method and possible problems with the math language

import java.util.Scanner;
import java.lang.Math;
public class arrayVariance
{
public static void main( String[] args )
{
  
double[] array = new double[40];
double sumv=0,sumk=0,sum=0,avg=0, xx=0;
double i=0, n=array.length

Scanner in = new Scanner(System.in);
System.out.println("Enter data value, enter -101 to quit. ");
System.out.println("Array size = "+ n);
while(array[i]!=-101 && array.length<40)

//the not equals -101 and less than 40 is correct, already asked for help on this and this got changed to an or statement

{array[i] = in.nextInt();}
for( i = 0; i < array.length; i++ )
{sum = math.Sum(array[i]);}
for( i = 0; i < array.length; i++ )
{avg = sum/array.length;}
for( i = 0; i < array.length; i++ )
{xx =(array[i]-avg);}
for( i = 0; i < array.length; i++ )
{sumv=math.Sum(xx*xx);}
for( i = 0; i < array.length; i++ )
{sumk=math.Sum(xx*xx*xx*xx);}
System.out.println("the data values are:" +array[i]);
}

public static double([],i,sumv,n)
{for( i = 0; i < array.length; i++ )
{double var=sumv/(n-1);
return var;}}
  
public static double([],i,sumk,n)
{for( i = 0; i < array.length; i++ )
{double kur =sumk/(n*var*var)-3;
return kur;}}

  
  
System.out.println("Average= "+avg+", variance= "+var+", kurtosis= "+kur);

}

Explanation / Answer

I think you are new to java programming. There were many errors in your code. You first write sample java programs by refering to a tutorial. you were using unnecessary for loops where they were not required. I think you didn't understand the concept of local variables.

modified code: I just removed Syntactic errors.

import java.util.Scanner;
import java.lang.Math;
public class arrayVariance{
   public static void main( String[] args ){
  
       double[] array = new double[40];
       double sumv=0,sumk=0,sum=0,avg=0, xx=0;
       int i=0, n=array.length;

       Scanner in = new Scanner(System.in);
       System.out.println("Enter data value, enter -101 to quit. ");
       System.out.println("Array size = "+ n);
       while(array[i]!=-101 && array.length<40){
           array[i] = in.nextInt();
       }
       for( i = 0; i < array.length; i++ ){
           sum = sum+array[i];
       }
       avg = sum/array.length;
      
       for( i = 0; i < array.length; i++ ){
           xx =(array[i]-avg);
           sumv=sum+(xx*xx);
       }
      
       System.out.println("the data values are:" +array[i]);
       }

       public static double f(double array[],int i,double sumv,int n){
           double var=sumv/(n-1);
           return var;
       }
      
       public static double g(double array[],int i,double sumk,int n){
               double kur=sumk/n-3;

               // double kur =sumk/(n*var*var)-3;
               return kur;
          
       }
      
      
      

}

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