Statistics Calculator

import java.util.Scanner;
public class newCalculator
{
    public static void main(String[] args)
{
    Scanner keyboard = new Scanner(System.in);
    System.out.println("Please enter a number.");
	int n=keyboard.nextInt();
	double[] input=new double[n];
	double sum = 0,mean;
	System.out.println("enter n elements");	
	for(int i=0; i<n ;i++) 
	{
		input[i]=keyboard.nextDouble();
		sum=sum+input[i];
	}
       	mean = sum/n;
       	System.out.println("Mean =  "+mean);
	sum = 0;  
	for(int i = 0; i<n; i++) 
	{
		sum+=Math.pow((input[i]-mean),2);
	}
	mean = sum/(n-1);
	double SD = Math.sqrt(mean);
	System.out.println("Standard Deviation = "+ SD);
}
}
newConsole.main(null);