TwoSampleZTestPowerAnalysisGetSampleSize Method

public static TwoSampleZTestPowerAnalysis GetSampleSize(
	double delta,
	double standardDeviation = 1,
	double proportion = 1,
	double power = 0.8,
	double alpha = 0.05,
	TwoSampleHypothesis hypothesis = TwoSampleHypothesis.ValuesAreDifferent
)

Public Shared Function GetSampleSize ( 
	delta As Double,
	Optional standardDeviation As Double = 1,
	Optional proportion As Double = 1,
	Optional power As Double = 0.8,
	Optional alpha As Double = 0.05,
	Optional hypothesis As TwoSampleHypothesis = TwoSampleHypothesis.ValuesAreDifferent
) As TwoSampleZTestPowerAnalysis

Parameters

delta

Type: SystemDouble
The minimum detectable difference.

standardDeviation (Optional)

Type: SystemDouble
The difference standard deviation.

proportion (Optional)

Type: SystemDouble
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 (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.TestingTwoSampleHypothesis
The alternative hypothesis (research hypothesis) to be tested.

Return Value

Reference