/// <summary> /// Estimates the number of samples necessary to attain the /// required power level for the given effect size. /// </summary> /// /// <param name="sampleSize1">The number of observations in the first sample.</param> /// <param name="sampleSize2">The number of observations in the second sample.</param> /// <param name="power">The desired power level. Default is 0.8.</param> /// <param name="alpha">The desired significance level. Default is 0.05.</param> /// <param name="hypothesis">The alternative hypothesis (research hypothesis) to be tested.</param> /// /// <returns>The required number of samples.</returns> /// public static TwoSampleZTestPowerAnalysis GetEffectSize(int sampleSize1, int sampleSize2, double power = 0.8, double alpha = 0.05, TwoSampleHypothesis hypothesis = TwoSampleHypothesis.ValuesAreDifferent) { var analysis = new TwoSampleZTestPowerAnalysis(hypothesis) { Samples1 = sampleSize1, Samples2 = sampleSize2, Size = alpha, Power = power, }; analysis.ComputeEffect(); return(analysis); }
/// <summary> /// Estimates the number of samples necessary to attain the /// required power level for the given effect size. /// </summary> /// /// <param name="sampleSize1">The number of observations in the first sample.</param> /// <param name="sampleSize2">The number of observations in the second sample.</param> /// <param name="power">The desired power level. Default is 0.8.</param> /// <param name="alpha">The desired significance level. Default is 0.05.</param> /// <param name="hypothesis">The alternative hypothesis (research hypothesis) to be tested.</param> /// /// <returns>The required number of samples.</returns> /// public static TwoSampleZTestPowerAnalysis GetEffectSize(int sampleSize1, int sampleSize2, double power = 0.8, double alpha = 0.05, TwoSampleHypothesis hypothesis = TwoSampleHypothesis.ValuesAreDifferent) { var analysis = new TwoSampleZTestPowerAnalysis(hypothesis) { Samples1 = sampleSize1, Samples2 = sampleSize2, Size = alpha, Power = power, }; analysis.ComputeEffect(); return analysis; }