Accord.Tests.Statistics.TTestPowerAnalysisTest.TTestPowerAnalysisConstructorTest4 C# (CSharp) Метод

        public void TTestPowerAnalysisConstructorTest4()
        {
            // Example from http://www.ats.ucla.edu/stat/stata/dae/t_test_power2.htm,
            // tested against G*Power results

            double meanA = 0;
            double meanB = 10;

            double sdA = 15;
            double sdB = 17;

            double varA = sdA * sdA;
            double varB = sdB * sdB;


            {
                var priori = TwoSampleTTestPowerAnalysis.GetSampleSize(10,
                    variance1: varA, variance2: varB, power: 0.8);

                Assert.AreEqual(41, Math.Truncate(priori.Samples1));
                Assert.AreEqual(41, Math.Truncate(priori.Samples2));
            }

            {
                TwoSampleTTest test = new TwoSampleTTest(
                    meanA, varA, 30,
                    meanB, varB, 30);

                Assert.AreEqual(0.661222, test.Analysis.Power, 1e-6);
            }

            {
                TwoSampleTTest test = new TwoSampleTTest(
                    meanA, varA, 20,
                    meanB, varB, 40);

                Assert.AreEqual(0.6102516, test.Analysis.Power, 1e-6);
            }


            {
                var priori = TwoSampleTTestPowerAnalysis.GetSampleSize(10,
                variance1: varA, variance2: varB, power: 0.8, alpha: 0.07);

                Assert.AreEqual(37, Math.Truncate(priori.Samples1));
                Assert.AreEqual(37, Math.Truncate(priori.Samples2));
            }
        }