72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: StatisticsHelper.hxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: rt $ $Date: 2005-09-08 00:46:42 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#ifndef CHART2_STATISTICSHELPER_HXX
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#define CHART2_STATISTICSHELPER_HXX
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#ifndef _COM_SUN_STAR_UNO_SEQUENCE_HXX_
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#include <com/sun/star/uno/Sequence.hxx>
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#endif
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namespace chart
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{
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class StatisticsHelper
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{
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public:
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/** Calculates 1/n * sum (x_i - x_mean)^2.
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@see http://mathworld.wolfram.com/Variance.html
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@param bUnbiasedEstimator
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If true, 1/(n-1) * sum (x_i - x_mean)^2 is returned.
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*/
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static double getVariance( const ::com::sun::star::uno::Sequence< double > & rData,
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bool bUnbiasedEstimator = false );
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// square root of the variance
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static double getStandardDeviation( const ::com::sun::star::uno::Sequence< double > & rData );
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// also called "Standard deviation of the mean (SDOM)"
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static double getStandardError( const ::com::sun::star::uno::Sequence< double > & rData );
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private:
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// not implemented
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StatisticsHelper();
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};
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} // namespace chart
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// CHART2_STATISTICSHELPER_HXX
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#endif
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