How to find the mean, median, and mode in java using OOP? Actually, only the mode. I dunno how to find the mode of 10 numbers which are to be input by the user. Only in the 'class' code in object oriented program. Jun 06, 2017 This article shows how to calculate Mean, Median, Mode, Variance, and Standard Deviation of any data set using R programming language. Mean: Calculate sum of all the values and divide it with the total number of values in the data set.
Exercise: Write a Java program to answer about the statistical information such as arithmetic mean, median, mode, and standard deviation of an integer data set. The data points are input by the user from keyboard. This program will display the output similar to the one shown below:
If you are not sure about statistical information such as arithmetic mean, median, mode, and standard deviation, you will need to read this page:
Java Program To Calculate Mean Median Mode And Range
Solution:
import java.util.Scanner; public class StatisticsInfo { public static void main(String[] args) { showStatistics(); } static void showStatistics(){ // int n; float mean,median,std; Scanner sc=new Scanner(System.in); System.out.print('Enter number of data points:'); n=sc.nextInt(); if (n < 3) { System.out.println('The number of data points should be greater than 2.'); } else { //declare an array of n size to store integral data points int[] dataset = new int[n]; //allow user inputs int i = 0; for (i = 0; i < n; i++) { System.out.print('['+i+']:'); dataset[i] = sc.nextInt(); } //sort the data set bubblesort(dataset, n); //calculate the mean int sum = 0; int j = 0; while (j < n) { sum = sum + dataset[j]; j++; } mean = (float)sum / n; //calculate median //If n is odd, median=dataset[n/2] //If n is even, median=(dataset[n/2]+dataset[1+n/2])/2 //The index of array starts from 0, so you need to subtract 1 from the indices used in calculating the median if (n % 2 != 0) median = dataset[n / 2]; else median = (dataset[(n / 2) - 1] + dataset[n / 2]) / (float)2; //calculate the mode int[][] mode = new int[n][2]; //initialize 2D array storing numbers of occurences, and values for (i = 0; i < 2; i++) for (j = 0; j < n; j++) mode[j][i] = 0; mode[0][0] = 1; for (i = 0; i < n; i++) for (j = 0; j < n - 1; j++) if (dataset[i] dataset[j + 1]) { ++mode[i][0]; mode[i][1] = dataset[i]; } int max; int k = 0; max = mode[0][0]; for (j = 0; j < n; j++) if (max < mode[j][0]) { max = mode[j][0]; k = j; } //calculate standard deviation,std float temp = 0.0f; for (j = 0; j < n; j++) { temp = temp + (float)Math.pow(dataset[j] - mean, 2); } std = (float)Math.sqrt(temp / (n - 1)); //Show results System.out.println('Statistical Information:'); System.out.println('); System.out.println('Arithmetic mean:'+mean); System.out.println('Median:'+median); if (mode[k][1] != 0) System.out.println('Mode:'+ mode[k][1]); else System.out.println('Mode: no mode'); System.out.println('Standard deviation:'+std); } // Gerber v10 full crack. } Does cracker barrel have liver and onions.