Calculating basic Statistics

Functions
double	Db::getMinimum (const String &name, bool useSel=false) const
double	Db::getMaximum (const String &name, bool useSel=false) const
VectorDouble	Db::getRange (const String &name, bool useSel=false) const
double	Db::getMean (const String &name, bool useSel=false) const
double	Db::getVariance (const String &name, bool useSel=false) const
double	Db::getStdv (const String &name, bool useSel=false) const
double	Db::getCorrelation (const String &name1, const String &name2, bool useSel=false) const

Detailed Description

Calculate some basic statistics on the active samples of variables stored in a Db.

Parameters

name	Target variable name
name1	First target variable name
name2	Second target variable name
useSel	When TRUE, the statistics are derived from the only active samples

Function Documentation

getCorrelation()

double Db::getCorrelation	(	const String &	name1,
		const String &	name2,
		bool	useSel = false
	)		const

Returns the correlation coefficient between two target variables

getMaximum()

double Db::getMaximum	(	const String &	name,
		bool	useSel = false
	)		const

Returns the maximum of the target variable

getMean()

double Db::getMean	(	const String &	name,
		bool	useSel = false
	)		const

Returns the mean of the target variable

getMinimum()

double Db::getMinimum	(	const String &	name,
		bool	useSel = false
	)		const

Returns the minimum of the target variable

getRange()

VectorDouble Db::getRange	(	const String &	name,
		bool	useSel = false
	)		const

Returns a vector containing the minimum and maximum of the target variable

getStdv()

double Db::getStdv	(	const String &	name,
		bool	useSel = false
	)		const

Returns the standard deviation (square root of the variance) of the target variable

getVariance()

double Db::getVariance	(	const String &	name,
		bool	useSel = false
	)		const

Returns the variance of the target variable