/**
* Copyright Copyright 2010-14 Simon Andrews
*
* This file is part of BamQC.
*
* BamQC 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.
*
* BamQC 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 BamQC; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* Changelog:
* - Simon Andrews: Class creation.
*/
package uk.ac.babraham.BamQC.Statistics;
/**
*
* @author Simon Andrews
*
*/
public class NormalDistribution {
private double mean;
private double stdev;
public NormalDistribution (double mean, double stdev) {
// System.out.println("Made distribution with mean "+mean+" and variance "+stdev);
this.mean = mean;
this.stdev = stdev;
}
public double getZScoreForValue (double value) {
double lhs = 1d/(Math.sqrt(2*Math.PI*stdev*stdev));
double rhs = Math.pow(Math.E, 0 - (Math.pow(value-mean,2)/(2*stdev*stdev)));
return lhs*rhs;
}
// public static void main (String [] args) {
// NormalDistribution nd = new NormalDistribution(50, 5);
//
// for (int i=0;i<=100;i++) {
// System.out.println(i+"\t"+nd.getZScoreForValue(i));
// }
// }
}