QtiPlot 0.9.8.2
tTest.h
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00001 /***************************************************************************
00002     File                 : tTest.h
00003     Project              : QtiPlot
00004     --------------------------------------------------------------------
00005     Copyright            : (C) 2010 by Ion Vasilief
00006     Email (use @ for *)  : ion_vasilief*yahoo.fr
00007     Description          : Student's t-Test
00008 
00009  ***************************************************************************/
00010 
00011 /***************************************************************************
00012  *                                                                         *
00013  *  This program is free software; you can redistribute it and/or modify   *
00014  *  it under the terms of the GNU General Public License as published by   *
00015  *  the Free Software Foundation; either version 2 of the License, or      *
00016  *  (at your option) any later version.                                    *
00017  *                                                                         *
00018  *  This program is distributed in the hope that it will be useful,        *
00019  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
00020  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
00021  *  GNU General Public License for more details.                           *
00022  *                                                                         *
00023  *   You should have received a copy of the GNU General Public License     *
00024  *   along with this program; if not, write to the Free Software           *
00025  *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
00026  *   Boston, MA  02110-1301  USA                                           *
00027  *                                                                         *
00028  ***************************************************************************/
00029 #ifndef TTEST_H
00030 #define TTEST_H
00031 
00032 #include <StatisticTest.h>
00033 
00035 class tTest : public StatisticTest
00036 {
00037     Q_OBJECT
00038 
00039     public:
00040         tTest(ApplicationWindow *parent, double testValue, double level,
00041             const QString& sample1 = QString(), const QString& sample2 = QString(), bool paired = false);
00042 
00043         bool setSample1(const QString& colName){return setData(colName);};
00044         bool setSample2(const QString& colName, bool paired = false);
00045 
00046         virtual QString logInfo();
00047 
00048         double t();
00049         double statistic(){return t();};
00050         double pValue();
00051         int dof();
00052 
00053         double power(double alpha, int size = 0);
00055         double lcl(double confidenceLevel);
00057         double ucl(double confidenceLevel);
00058 
00059     protected:
00060         double t(int size);
00061         void freeMemory();
00062 
00063         Statistics *d_sample2;
00064         bool d_independent_test;
00065         double d_s12, d_diff;
00066 };
00067 
00068 #endif