/*
    $Id: stats.h 490596 2005-12-22 13:05:45Z scripty $

    KCalc, a scientific calculator for the X window system using the
    Qt widget libraries, available at no cost at http://www.troll.no
   
    Copyright (C) 1996 Bernd Johannes Wuebben
                       wuebben@math.cornell.edu
    
    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 2 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, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/

#ifndef KSTATS_H
#define KSTATS_H

#include <qvaluevector.h>
#include "knumber.h"

class KStats {

public:
	KStats();
	~KStats();

public:
	void clearAll();
	void enterData(const KNumber & data);
	void clearLast();
	KNumber sum();
	KNumber sum_of_squares();
	KNumber mean();
	KNumber median();
	KNumber std_kernel();
	KNumber std();
	KNumber sample_std();
	int count() const;
	bool     error();

private:
    QValueVector<KNumber> mData;
    bool error_flag;

};


#endif /*KSTATS_H*/

