Java stddev stddev(double sum, double sqSum, int numberValues)

Description

stddev

License

Open Source License

Parameter

Parameter	Description
sum	- sum of values
sqSum	- sum of the square values
numberValues	a parameter

Declaration

public static double stddev(double sum, double sqSum, int numberValues) 

Method Source Code

//package com.java2s;
/*//from   w w  w. ja va 2 s .  c o m
 * Copyright (c) 2004-2015 Universidade do Porto - Faculdade de Engenharia
 * Laborat?rio de Sistemas e Tecnologia Subaqu?tica (LSTS)
 * All rights reserved.
 * Rua Dr. Roberto Frias s/n, sala I203, 4200-465 Porto, Portugal
 *
 * This file is part of Neptus, Command and Control Framework.
 *
 * Commercial Licence Usage
 * Licencees holding valid commercial Neptus licences may use this file
 * in accordance with the commercial licence agreement provided with the
 * Software or, alternatively, in accordance with the terms contained in a
 * written agreement between you and Universidade do Porto. For licensing
 * terms, conditions, and further information contact lsts@fe.up.pt.
 *
 * European Union Public Licence - EUPL v.1.1 Usage
 * Alternatively, this file may be used under the terms of the EUPL,
 * Version 1.1 only (the "Licence"), appearing in the file LICENSE.md
 * included in the packaging of this file. You may not use this work
 * except in compliance with the Licence. Unless required by applicable
 * law or agreed to in writing, software distributed under the Licence is
 * distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF
 * ANY KIND, either express or implied. See the Licence for the specific
 * language governing permissions and limitations at
 * https://www.lsts.pt/neptus/licence.
 *
 * For more information please see <http://lsts.fe.up.pt/neptus>.
 *
 * Author: hfq
 * Jun 21, 2013
 */

public class Main {
    /**
     * 
     * @param sum - sum of values
     * @param sqSum - sum of the square values
     * @param numberValues
     * @return
     */
    public static double stddev(double sum, double sqSum, int numberValues) {
        double variance = (sqSum - (sum * sum) / numberValues) / (numberValues - 1);
        return Math.sqrt(variance);
    }
}

Related

1. std(float[][] arr)
2. std(long[] array)
3. stdarr(int[] a, double avg)
4. stddev(Collection a)
5. stdDev(Collection coll)
6. stddev(double[] a)
7. stddev(double[] arr)
8. stdDev(double[] array)
9. stdDev(double[] data)