ZTestPowerAnalysisGetSampleSize Method

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

Namespace: Accord.Statistics.Testing.Power
Assembly: Accord.Statistics (in Accord.Statistics.dll) Version: 3.8.0

Syntax

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public static ZTestPowerAnalysis GetSampleSize(
	double delta,
	double standardDeviation = 1,
	double power = 0.8,
	double alpha = 0.05,
	OneSampleHypothesis hypothesis = OneSampleHypothesis.ValueIsDifferentFromHypothesis
)

Public Shared Function GetSampleSize ( 
	delta As Double,
	Optional standardDeviation As Double = 1,
	Optional power As Double = 0.8,
	Optional alpha As Double = 0.05,
	Optional hypothesis As OneSampleHypothesis = OneSampleHypothesis.ValueIsDifferentFromHypothesis
) As ZTestPowerAnalysis

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Parameters

delta: Type: SystemDouble
The minimum detectable difference.
standardDeviation (Optional): Type: SystemDouble
The difference standard deviation.
power (Optional): Type: SystemDouble
The desired power level. Default is 0.8.
alpha (Optional): Type: SystemDouble
The desired significance level. Default is 0.05.
hypothesis (Optional): Type: Accord.Statistics.TestingOneSampleHypothesis
The alternative hypothesis (research hypothesis) to be tested.

Return Value

Type: ZTestPowerAnalysis
The required number of samples.

Reference

ZTestPowerAnalysis Class

Accord.Statistics.Testing.Power Namespace

ZTestPowerAnalysisAddLanguageSpecificTextSet("LST1BC8B027_0?cpp=::|nu=.");GetSampleSize Method

Parameters

Return Value

Reference

ZTestPowerAnalysisGetSampleSize Method