ChiSquareTest Class Reference

Chi-Square test for variance. More...

#include <ChiSquareTest.h>

Inheritance diagram for ChiSquareTest:

Public Member Functions
double	chiSquare ()
	ChiSquareTest (ApplicationWindow *parent, double testValue, double level, const QString &sample=QString())
double	lcl (double confidenceLevel)
	Lower Confidence Limit. More...
virtual QString	logInfo ()
double	pValue ()
double	statistic ()
double	ucl (double confidenceLevel)
	Upper Confidence Limit. More...
Public Member Functions inherited from StatisticTest
virtual void	outputResultsTo (Table *)
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)
	StatisticTest (ApplicationWindow *parent, double testValue=0.0, double level=0.05, const QString &sample=QString())
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 ()

Additional Inherited Members
Public Types inherited from StatisticTest
enum	Tail { Left = 0, Right = 1, Both = 2 }
enum	TestType { StudentTest = 0, NormalityTest = 1, ChiSquareTest = 2, AnovaTest = 3 }
Protected Member Functions inherited from Statistics
virtual void	freeMemory ()
	Frees the memory allocated for the X and Y data sets. More...
void	memoryErrorMessage ()
Protected Attributes inherited from StatisticTest
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

Detailed Description

Chi-Square test for variance.

Constructor & Destructor Documentation

ChiSquareTest::ChiSquareTest	(	ApplicationWindow *	parent,
		double	testValue,
		double	level,
		const QString &	sample = QString()
	)

Member Function Documentation

double ChiSquareTest::chiSquare

(

)

References Statistics::d_n, StatisticTest::d_test_val, and Statistics::d_variance.

Referenced by logInfo(), pValue(), and statistic().

double ChiSquareTest::lcl ( double  confidenceLevel )

virtual

Lower Confidence Limit.

Reimplemented from StatisticTest.

References Statistics::d_n, Statistics::d_variance, and Statistics::dof().

QString ChiSquareTest::logInfo ( )

virtual

Reimplemented from StatisticTest.

References StatisticTest::Both, chiSquare(), ApplicationWindow::d_decimal_digits, StatisticTest::d_descriptive_statistics, StatisticTest::d_significance_level, Statistics::d_table, StatisticTest::d_tail, StatisticTest::d_test_val, Statistics::dof(), StatisticTest::Left, Statistics::logInfo(), pValue(), and StatisticTest::Right.

double ChiSquareTest::pValue ( )

virtual

Reimplemented from StatisticTest.

References StatisticTest::Both, chiSquare(), Statistics::d_n, StatisticTest::d_tail, Statistics::dof(), StatisticTest::Left, and StatisticTest::Right.

Referenced by logInfo().

double ChiSquareTest::statistic ( )

inlinevirtual

Reimplemented from StatisticTest.

References chiSquare().

double ChiSquareTest::ucl ( double  confidenceLevel )

virtual

Upper Confidence Limit.

Reimplemented from StatisticTest.

References Statistics::d_n, Statistics::d_variance, and Statistics::dof().

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

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