C# Class Accord.Statistics.Testing.Power.TwoSampleTTestPowerAnalysis

Inheritance: BaseTwoSamplePowerAnalysis

Public Methods

Method	Description
ComputePower ( ) : void	Computes the power for a test with givens values of effect size and number of samples under IPowerAnalysis.Size.
GetSampleSize ( double delta, double standardDeviation = 1, double proportion = 1.0, double power = 0.8, double alpha = 0.05, TwoSampleHypothesis hypothesis = TwoSampleHypothesis.ValuesAreDifferent ) : TwoSampleTTestPowerAnalysis	Estimates the number of samples necessary to attain the required power level for the given effect size.
GetSampleSize ( double delta, double variance1, double variance2, double proportion = 1.0, double power = 0.8, double alpha = 0.05, TwoSampleHypothesis hypothesis = TwoSampleHypothesis.ValuesAreDifferent ) : TwoSampleTTestPowerAnalysis	Estimates the number of samples necessary to attain the required power level for the given effect size.
TwoSampleTTestPowerAnalysis ( TwoSampleHypothesis hypothesis ) : System	Creates a new TTestPowerAnalysis.
TwoSampleTTestPowerAnalysis ( TwoSampleTTest test ) : System	Creates a new TTestPowerAnalysis.

Computes the power for a test with givens values of effect size and number of samples under IPowerAnalysis.Size.

public ComputePower ( ) : void
return	void

Estimates the number of samples necessary to attain the required power level for the given effect size.

public static GetSampleSize ( double delta, double standardDeviation = 1, double proportion = 1.0, double power = 0.8, double alpha = 0.05, TwoSampleHypothesis hypothesis = TwoSampleHypothesis.ValuesAreDifferent ) : TwoSampleTTestPowerAnalysis
delta	double	The minimum detectable difference.
standardDeviation	double	The difference standard deviation.
proportion	double	The proportion of observations in the second group /// when compared to the first group. A proportion of 2:1 results in twice more /// samples in the second group than in the first. Default is 1.
power	double	The desired power level. Default is 0.8.
alpha	double	The desired significance level. Default is 0.05.
hypothesis	TwoSampleHypothesis	The alternative hypothesis (research hypothesis) to be tested.
return	TwoSampleTTestPowerAnalysis

Estimates the number of samples necessary to attain the required power level for the given effect size.

public static GetSampleSize ( double delta, double variance1, double variance2, double proportion = 1.0, double power = 0.8, double alpha = 0.05, TwoSampleHypothesis hypothesis = TwoSampleHypothesis.ValuesAreDifferent ) : TwoSampleTTestPowerAnalysis
delta	double	The minimum detectable difference.
variance1	double	The first sample variance.
variance2	double	The second sample variance.
proportion	double	The proportion of observations in the second group /// when compared to the first group. A proportion of 2:1 results in twice more /// samples in the second group than in the first. Default is 1.
power	double	The desired power level. Default is 0.8.
alpha	double	The desired significance level. Default is 0.05.
hypothesis	TwoSampleHypothesis	The alternative hypothesis (research hypothesis) to be tested.
return	TwoSampleTTestPowerAnalysis

Creates a new TTestPowerAnalysis.

public TwoSampleTTestPowerAnalysis ( TwoSampleHypothesis hypothesis ) : System
hypothesis	TwoSampleHypothesis	The hypothesis tested.
return	System

Creates a new TTestPowerAnalysis.

public TwoSampleTTestPowerAnalysis ( TwoSampleTTest test ) : System
test	TwoSampleTTest	The test to create the analysis for.
return	System