StatisticTest Class Reference

Abstract base class for statistic tests. More...

#include <StatisticTest.h>

Inheritance diagram for StatisticTest:

Public Types
enum	Tail { Left = 0, Right = 1, Both = 2 }
enum	TestType { StudentTest = 0, NormalityTest = 1, ChiSquareTest = 2, AnovaTest = 3 }

Public Member Functions
virtual double	lcl (double)
	Lower Confidence Limit. More...
virtual QString	logInfo ()
virtual void	outputResultsTo (Table *)
virtual double	pValue ()
virtual Table *	resultTable (const QString &name=QString())
	Returns a pointer to the table created to display the results. More...
void	setSignificanceLevel (double s)
void	setTail (const Tail &tail)
void	setTestValue (double val)
void	showDescriptiveStatistics (bool show=true)
virtual double	statistic ()
	StatisticTest (ApplicationWindow *parent, double testValue=0.0, double level=0.05, const QString &sample=QString())
virtual double	ucl (double)
	Upper Confidence Limit. More...
Public Member Functions inherited from Statistics
double *	data ()
	Returns the y values of the input data set. More...
unsigned int	dataSize ()
	Returns the size of the input data set. More...
virtual int	dof ()
	Returns the degrees of freedom. More...
QString	logInfo (bool header=true)
double	mean ()
virtual bool	run ()
	Actually does the job. Should be reimplemented in derived classes. More...
QString	sampleName ()
bool	setData (const QString &)
void	showResultsLog (bool show=true)
double	standardDeviation ()
double	standardError ()
	Statistics (ApplicationWindow *parent, const QString &name=QString())
double	variance ()
	~Statistics ()

Protected Attributes
bool	d_descriptive_statistics
double	d_significance_level
int	d_tail
double	d_test_val
Protected Attributes inherited from Statistics
QString	d_col_name
	The name of the source data set. More...
double *	d_data
	y data set to be analysed More...
double	d_mean
unsigned int	d_n
	The size of the data set to be analyzed. More...
bool	d_result_log
	Flag specifying if the results should be displayed in the results log. More...
double	d_sd
double	d_se
Table *	d_table
	A table source of data. More...
double	d_variance

Additional Inherited Members
Protected Member Functions inherited from Statistics
virtual void	freeMemory ()
	Frees the memory allocated for the X and Y data sets. More...
void	memoryErrorMessage ()

Detailed Description

Abstract base class for statistic tests.

Member Enumeration Documentation

enum StatisticTest::Tail

Enumerator
Left
Right
Both

enum StatisticTest::TestType

Enumerator
StudentTest
NormalityTest
ChiSquareTest
AnovaTest

Constructor & Destructor Documentation

StatisticTest::StatisticTest	(	ApplicationWindow *	parent,
		double	testValue = 0.0,
		double	level = 0.05,
		const QString &	sample = QString()
	)

Member Function Documentation

virtual double StatisticTest::lcl ( double  )

inlinevirtual

Lower Confidence Limit.

Reimplemented in tTest, and ChiSquareTest.

virtual QString StatisticTest::logInfo ( )

inlinevirtual

Reimplemented in Anova, tTest, ShapiroWilkTest, and ChiSquareTest.

References Statistics::logInfo().

void StatisticTest::outputResultsTo ( Table *  t )

virtual

Reimplemented in Anova.

References Statistics::d_mean, Statistics::d_n, Statistics::d_sd, Statistics::d_se, Statistics::d_variance, Statistics::dof(), Table::numCols(), Table::numRows(), pValue(), Statistics::sampleName(), Table::setCell(), Table::setColumnType(), Table::setNumCols(), Table::setNumRows(), Table::setText(), statistic(), Table::table(), and Table::Text.

Referenced by StudentTestDialog::outputResults(), and AnovaDialog::outputResults().

virtual double StatisticTest::pValue ( )

inlinevirtual

Reimplemented in Anova, tTest, ChiSquareTest, and ShapiroWilkTest.

Referenced by outputResultsTo(), and resultTable().

Table * StatisticTest::resultTable ( const QString &  name = QString() )

virtual

Returns a pointer to the table created to display the results.

Reimplemented in Anova.

References Statistics::d_mean, Statistics::d_n, Statistics::d_sd, Statistics::d_se, Statistics::d_variance, Statistics::dof(), ApplicationWindow::newTable(), Table::numCols(), pValue(), Statistics::sampleName(), Table::setCell(), Table::setColumnType(), Table::setHeader(), Table::setText(), statistic(), Table::table(), and Table::Text.

Referenced by StudentTestDialog::outputResults(), and AnovaDialog::outputResults().

void StatisticTest::setSignificanceLevel ( double  s )

inline

References d_significance_level.

Referenced by AnovaDialog::acceptNormalityTest().

void StatisticTest::setTail ( const Tail &  tail )

inline

References d_tail.

void StatisticTest::setTestValue ( double  val )

inline

References d_test_val.

void StatisticTest::showDescriptiveStatistics ( bool  show = true )

inline

References d_descriptive_statistics.

virtual double StatisticTest::statistic ( )

inlinevirtual

Reimplemented in Anova, tTest, ChiSquareTest, and ShapiroWilkTest.

Referenced by outputResultsTo(), and resultTable().

virtual double StatisticTest::ucl ( double  )

inlinevirtual

Upper Confidence Limit.

Reimplemented in tTest, and ChiSquareTest.

Member Data Documentation

bool StatisticTest::d_descriptive_statistics

protected

Referenced by ChiSquareTest::logInfo(), tTest::logInfo(), Anova::logInfo(), and showDescriptiveStatistics().

double StatisticTest::d_significance_level

protected

Referenced by ShapiroWilkTest::infoString(), ChiSquareTest::logInfo(), tTest::logInfo(), Anova::logInfo(), and setSignificanceLevel().

int StatisticTest::d_tail

protected

Referenced by ChiSquareTest::logInfo(), tTest::logInfo(), tTest::power(), ChiSquareTest::pValue(), tTest::pValue(), and setTail().

double StatisticTest::d_test_val

protected

Referenced by ChiSquareTest::chiSquare(), ChiSquareTest::logInfo(), tTest::logInfo(), setTestValue(), and tTest::t().

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The documentation for this class was generated from the following files:

• qtiplot/src/analysis/StatisticTest.h
• qtiplot/src/analysis/StatisticTest.cpp