tTest Class Reference

Student's t-Test. More...

#include <tTest.h>

Inheritance diagram for tTest:

List of all members.

Public Member Functions
int	dof ()
	Returns the degrees of freedom.
double	lcl (double confidenceLevel)
	Lower Confidence Limit.
virtual QString	logInfo ()
double	power (double alpha, int size=0)
double	pValue ()
bool	setSample1 (const QString &colName)
bool	setSample2 (const QString &colName, bool paired=false)
double	statistic ()
double	t ()
	tTest (ApplicationWindow *parent, double testValue, double level, const QString &sample1=QString(), const QString &sample2=QString(), bool paired=false)
double	ucl (double confidenceLevel)
	Upper Confidence Limit.
Protected Member Functions
void	freeMemory ()
	Frees the memory allocated for the X and Y data sets.
double	t (int size)
Protected Attributes
double	d_diff
bool	d_independent_test
double	d_s12
Statistics *	d_sample2

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Detailed Description

Student's t-Test.

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Constructor & Destructor Documentation

tTest::tTest	(	ApplicationWindow *	parent,
		double	testValue,
		double	level,
		const QString &	sample1 = QString(),
		const QString &	sample2 = QString(),
		bool	paired = false
	)

References setSample2().

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Member Function Documentation

int tTest::dof

(

)

[virtual]

Returns the degrees of freedom.

Reimplemented from Statistics.

References d_independent_test, Statistics::d_n, d_sample2, and Statistics::dataSize().

Referenced by lcl(), logInfo(), power(), pValue(), and ucl().

void tTest::freeMemory

(

)

[protected, virtual]

Frees the memory allocated for the X and Y data sets.

Reimplemented from Statistics.

References d_sample2.

double tTest::lcl

(

double

confidenceLevel

)

[virtual]

Lower Confidence Limit.

Reimplemented from StatisticTest.

References d_diff, Statistics::d_mean, Statistics::d_n, d_s12, d_sample2, Statistics::d_se, and dof().

QString tTest::logInfo

(

)

[virtual]

Reimplemented from StatisticTest.

References StatisticTest::Both, ApplicationWindow::d_decimal_digits, StatisticTest::d_descriptive_statistics, d_diff, d_independent_test, d_sample2, StatisticTest::d_significance_level, Statistics::d_table, StatisticTest::d_tail, StatisticTest::d_test_val, dof(), StatisticTest::Left, Statistics::logInfo(), pValue(), StatisticTest::Right, and t().

double tTest::power	(	double	alpha,
		int	size = 0
	)

References StatisticTest::Both, d_independent_test, Statistics::d_n, d_sample2, StatisticTest::d_tail, dof(), StatisticTest::Left, StatisticTest::Right, and t().

double tTest::pValue

(

)

[virtual]

Reimplemented from StatisticTest.

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

Referenced by logInfo().

bool tTest::setSample1

(

const QString &

colName

)

[inline]

References Statistics::setData().

bool tTest::setSample2	(	const QString &	colName,
		bool	paired = false
	)

References Statistics::d_data, d_diff, d_independent_test, Statistics::d_mean, Statistics::d_n, d_s12, d_sample2, Statistics::d_sd, Statistics::data(), Statistics::dataSize(), Statistics::mean(), Statistics::standardDeviation(), and Statistics::Statistics().

Referenced by tTest().

double tTest::statistic

(

)

[inline, virtual]

Reimplemented from StatisticTest.

References t().

double tTest::t

(

)

References d_diff, Statistics::d_mean, Statistics::d_n, d_s12, d_sample2, Statistics::d_sd, and StatisticTest::d_test_val.

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

double tTest::t

(

int

size

)

[protected]

References Statistics::d_mean, Statistics::d_sd, and StatisticTest::d_test_val.

double tTest::ucl

(

double

confidenceLevel

)

[virtual]

Upper Confidence Limit.

Reimplemented from StatisticTest.

References d_diff, Statistics::d_mean, Statistics::d_n, d_s12, d_sample2, Statistics::d_se, and dof().

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Member Data Documentation

double tTest::d_diff [protected]

Referenced by lcl(), logInfo(), setSample2(), t(), and ucl().

bool tTest::d_independent_test [protected]

Referenced by dof(), logInfo(), power(), and setSample2().

double tTest::d_s12 [protected]

Referenced by lcl(), setSample2(), t(), and ucl().

Statistics* tTest::d_sample2 [protected]

Referenced by dof(), freeMemory(), lcl(), logInfo(), power(), setSample2(), t(), and ucl().

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

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