Java ArrayList Average getAverage(ArrayList data)

Description

Small routines doing trivial stuff here

License

Open Source License

Declaration

public static double getAverage(ArrayList data) 

Method Source Code

//package com.java2s;
/***********************************************************************
    /*from  ww w.j  a  va 2 s.c om*/
   This file is part of KEEL-software, the Data Mining tool for regression, 
   classification, clustering, pattern mining and so on.
    
   Copyright (C) 2004-2010
       
   F. Herrera (herrera@decsai.ugr.es)
L. S?nchez (luciano@uniovi.es)
J. Alcal?-Fdez (jalcala@decsai.ugr.es)
S. Garc?a (sglopez@ujaen.es)
A. Fern?ndez (alberto.fernandez@ujaen.es)
J. Luengo (julianlm@decsai.ugr.es)
    
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
    
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
    
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see http://www.gnu.org/licenses/
      
**********************************************************************/

import java.util.*;

public class Main {
    /**
     * <p>
     * Small routines doing trivial stuff here
     * </p>
     */

    public static double getAverage(ArrayList data) {
        double ave = 0;
        int i, size = data.size();

        for (i = 0; i < size; i++) {
            ave += ((Double) data.get(i)).doubleValue();
        }

        ave /= (double) size;
        return ave;
    }
}

Related

1. average(ArrayList nums)
2. average(ArrayList array)
3. averageInColumns(ArrayList lines)
4. getAverage(ArrayList values)
5. getAverageOfList(ArrayList values)