// Deviation.java: Compute deviation public class Deviation { /** Main method */ public static void main(String[] args) { // Declare and create an array for 10 numbers double[] numbers = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; // Print numbers printArray(numbers); // Display mean and deviation System.out.println("The mean is " + mean(numbers)); System.out.println("The standard deviation is " + deviation(numbers)); int[] numbers2 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; // Print numbers using integers System.out.print("\n\n"); printArray(numbers2); // Display mean and deviation System.out.println("The mean is " + mean(numbers2)); System.out.println("The standard deviation is " + deviation(numbers2)); } /** Method for computing deviation of double values*/ public static double deviation(double[] x) { double mean = mean(x); double squareSum = 0; for (int i = 0; i < x.length; i++) { squareSum += Math.pow(x[i] - mean, 2); } return Math.sqrt((squareSum) / (x.length - 1)); } /** Method for computing deviation of int values*/ public static double deviation(int[] x) { double mean = mean(x); double squareSum = 0; for (int i = 0; i < x.length; i++) { squareSum += Math.pow(x[i] - mean, 2); } return Math.sqrt((squareSum) / (x.length - 1)); } /** Method for computing mean of an array of double values*/ public static double mean(double[] x) { double sum = 0; for (int i = 0; i < x.length; i++) sum += x[i]; return sum / x.length; } /** Method for computing mean of an array of int values*/ public static double mean(int[] x) { int sum = 0; for (int i = 0; i < x.length; i++) sum += x[i]; return sum / x.length; } /** Method for printing array */ public static void printArray(double[] x) { for (int i = 0; i < x.length; i++) System.out.print(x[i] + " "); System.out.println(); } /** Method for printing array */ public static void printArray(int[] x) { for (int i = 0; i < x.length; i++) System.out.print(x[i] + " "); System.out.println(); } }