PIStatistic< T > Class Template Reference

Template class for calculating statistical measures of a data set Calculates mean, variance, skewness and kurtosis for a numeric sample. More...

#include <pistatistic.h>

Public Member Functions
	PIStatistic ()
	Constructs an object with all accumulated values set to zero.
bool	calculate (const PIVector< T > &val, const T &given_mean)
	Calculates all statistics using the supplied mean value.
bool	calculate (const PIVector< T > &val)
	Calculates all statistics and derives the mean from the sample.

Static Public Member Functions
static T	calculateMean (const PIVector< T > &val)
	Returns arithmetic mean of the sample, or zero for an empty vector.

Public Attributes
T	mean
	Sample mean.
T	variance
	Variance estimate accumulated for the sample.
T	skewness
	Sample skewness.
T	kurtosis
	Excess kurtosis of the sample.

Detailed Description

template<typename T>
class PIStatistic< T >

Template class for calculating statistical measures of a data set Calculates mean, variance, skewness and kurtosis for a numeric sample.

Member Function Documentation

calculate()

template<typename T>

bool PIStatistic< T >::calculate ( const PIVector< T > & val, const T & given_mean )

inline

Calculates all statistics using the supplied mean value.

Returns false when the sample contains fewer than two values.